Tellerhäuser 광물 자원 추정 업데이트
22 4월 2024
첫 번째 주석 PLC
("퍼스트 틴" 또는 "회사")
Tellerhäuser 광물 자원 추정 업데이트
First Tin PLC ("First Tin"), a tin development company with advanced, low capex projects in Germany and Australia, is pleased to announce an updated Mineral Resource Estimate ("MRE") for its 100% owned Tellerhäuser Tin Project in Germany, completed by independent geological consultants DMT Group ("DMT"). The MRE has been prepared in accordance with the 2012 JORC Code & Guidelines and based on the additional information obtained from archives in Hartenstein and Chemnitz.
하이라이트:
· Total Indicated plus Inferred tin Mineral Resource Estimate ("MRE") at 0.20% Sn cut-off has increased by 35% from the H&S Consultants Pty Ltd ("H&SC") 2019 estimate, from 102,900t tin to 138,600t tin.
· Total Indicated only tin MRE at 0.20% Sn cut-off has increased from the H&SC estimate by 37% from 32,700t tin to 45,000t tin.
· Additional 42,726 tin assays included in the database, of which 1,164 are above the cut-off grade.
· Cut-off has been reduced from 0.50% Sn to 0.20% Sn due to improved tin prices. At the previously reported 0.50% cut-off grade, there is a 49% increase in Indicated and Inferred tin MRE from the previous Bara estimate 2021, which was quoted in the IPO prospectus.
· The additional MRE tonnage in the Indicated category, obtained by a combination of lower cut-off grade and increased data density, will enable a longer mine life to be considered in economic evaluations.
First Tin's CEO, Bill Scotting, commented: "This increased MRE is a large step forward for us at our Tellerhäuser project in Germany. In a world requiring more tin, but with few advanced projects such as ours, increasing our resources from historic drilling data mining is extremely valuable. The additional data from the equivalent of 1311 drillholes and channel samples has enabled a more robust resource model with significantly more tonnes. The increase in tonnage, especially in the Indicated category, allows us to consider a longer mine life in economic evaluations."
The updated Mineral Resource Estimate (MRE) is:
Table 1. Tellerhäuser Indicated and Inferred 의지
Resource Class | 도메인 | Density [t/m³] | Volume [Mm³] | 선박 [산] | Sn [%] | Sn [티] | Fe₂O₃ [%] | Zn [%] | Ag [ppm] | In [ppm] |
가리키는 | 스카른 | 3.60 | 1.44 | 5.18 | 0.57 | 29,700 | 17.94 | 0.78 | 3.92 | 40.17 |
광물화된 편암 | 2.90 | 1.65 | 4.79 | 0.32 | 15,300 | 1.92 | 0.04 | 0.94 | 3.39 | |
금액 가리키는 | 3.26 | 3.09 | 9.97 | 0.45 | 45,000 | 10.24 | 0.42 | 2.49 | 22.49 | |
유추 | 스카른 | 3.60 | 3.17 | 11.42 | 0.65 | 74,000 | 12.25 | 0.96 | 3.67 | 41.77 |
광물화된 편암 | 2.90 | 2.26 | 6.55 | 0.30 | 19,600 | 2.33 | 0.03 | 0.71 | 1.09 | |
금액 유추 | 3.34 | 5.43 | 17.97 | 0.52 | 93,600 | 8.63 | 0.62 | 2.59 | 26.94 |
The estimation was made by Florian Lowicki and Dr Bernd Teigler of DMT who are both Competent Persons under the JORC 2012 code and consent to the reporting of the MRE in the form and context in which it appears here. The JORC Table 1 is appended to the end of this announcement.
The MRE is reported to a 0.2% Sn cut-off grade which corresponds to an average resource grade of around 0.5% Sn. This is considered by the consultants to be a reasonable cut-off based on current tin prices.
A comparison with previous estimates is shown in the table below. Note that GKZ 1991 is a manual estimate and uses a 0.15% Sn cut-off. The rest are geostatistical estimates and use a cut-off of 0.20% Sn.
Table 2. Tellerhäuser Indicated and Inferred resource comparison (0.20% Sn cut-off)
Estimated By | 리소스 카테고리 | Tonnes (M) | Grade (% Sn) | Tin (Tonnes) |
GKZ 1991 | 가리키는 | 8.95 | 0.47 | 42,400 |
| 유추 | 13.67 | 0.57 | 78,500 |
| 금액 | 22.62 | 0.53 | 120,900 |
H&SC 2019 | 가리키는 | 6.87 | 0.48 | 32,700 |
| 유추 | 15.24 | 0.46 | 70,200 |
| 금액 | 22.11 | 0.47 | 102,900 |
DMT 2024 | 가리키는 | 9.97 | 0.45 | 45,000 |
| 유추 | 17.97 | 0.52 | 93,600 |
| 금액 | 27.93 | 0.50 | 138,600 |
The total MRE conducted by DMT contains around 36,000t (35%) more tin than the H&SC MRE and around 12,000t (37%) more tin in the Indicated category. This is partly due to using a higher bulk density (based on many new measurements obtained from the archives) and on using a slightly larger search radius.
A direct comparison with the Bara MRE, which used a cut-off of 0.50% Sn, and re-stating of the DMT MRE at 0.50% Sn cut-off, is provided below for completeness.
Estimated By | 리소스 카테고리 | Tonnes (M) | Grade (% Sn) | Tin (Tonnes) |
바라 2021 | 가리키는 | 2.0 | 1.0 | 19,000 |
| 유추 | 3.3 | 1.0 | 34,000 |
| 금액 | 5.3 | 1.0 | 53,000 |
DMT 2024 | 가리키는 | 2.3 | 1.0 | 23,000 |
| 유추 | 4.9 | 1.2 | 56,000 |
| 금액 | 7.2 | 1.1 | 79,000 |
At 0.50% cut-off grade, the total DMT MRE contains around 26,000t (49%) more tin than the Bara MRE and around 4,000t (21%) more tin in the Indicated category.
The updated MRE is based on the digitisation of the large amount of additional historic drilling data discovered in the archives in Hartenstein and Chemnitz. This data, previously obtained by Wismut during the 1970s and early 1980s, closes existing gaps in the mineral resource and provides additional resource volume, at minimal additional cost. An additional 42,726 tin assays have been included in the database, with 1,164 of these reporting grades over the cut-off of 0.20% Sn.
The following figures show a 3D model of the deposit and a grade-tonnage graph for Indicated category mineralisation.
The Tellerhäuser project is owned by First Tin's 100% owned German subsidiary, Saxore Bergbau GmbH.
문의 :
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편집자 주
First Tin은 유명한 주석 전문가 팀이 이끄는 윤리적이고 신뢰할 수 있으며 지속 가능한 주석 생산 회사입니다. 회사는 현재까지 수행된 광범위한 작업을 통해 위험이 상당히 제거된 독일과 호주에서 고가치, 저투자 주석 자산의 신속한 개발을 통해 분쟁이 없고 정치적 위험이 낮은 관할권에서 주석 공급업체가 되는 데 중점을 두고 있습니다.
주석은 세계를 탈탄소화하고 전기를 공급하려는 모든 계획에 필수적인 중요한 금속이지만, 유럽에는 공급량이 거의 없습니다. 수요 증가와 부족 현상으로 인해 주석은 가까운 미래에 지속적인 적자 시장을 겪게 될 것으로 예상됩니다.
First Tin의 목표는 동급 최고의 환경 표준을 사용하여 XNUMX년 안에 XNUMX개의 주석 광산을 생산하여 현재의 글로벌 청정 에너지 및 기술 혁명을 지원하는 공급 출처를 제공하는 것입니다.
APPENDIX 1 - JORC CODE, 2012 EDITION - TABLE 1 MINERAL RESOURCE ESTIMATION - UPDATE FOR THE TELLERHÄUSER PROJECT AREA, SAXONY, 독일.
섹션 1 샘플링 기법 및 데이터 (이 섹션의 기준은 이후의 모든 섹션에 적용됩니다.) | ||
기준 | JORC 코드 설명 | 해설 |
샘플링 기법 | · 샘플링의 특성 및 품질(예: 조사 중인 광물에 적합한 절단 채널, 무작위 칩 또는 특정 특수 산업 표준 측정 도구(다운홀 감마손데 또는 휴대용 XRF 기기 등)). 이러한 예는 샘플링의 넓은 의미를 제한하는 것으로 간주되어서는 안 됩니다. · 샘플 대표성과 사용된 측정 도구 또는 시스템의 적절한 교정을 보장하기 위해 취한 조치에 대한 참조를 포함합니다. · 공개 보고서에 중요한 광물화 결정의 측면. · '산업 표준' 작업이 수행된 경우 이는 비교적 간단합니다(예: '화재 분석을 위한 1g 충전물을 생성하기 위해 3kg을 분쇄한 30m 샘플을 얻기 위해 역순환 드릴링을 사용함'). 다른 경우에는 고유한 샘플링 문제가 있는 거친 금이 있는 경우와 같이 더 많은 설명이 필요할 수 있습니다. 특이한 상품 또는 광물 유형(예: 해저 결절)은 자세한 정보 공개를 보증할 수 있습니다.
| · While the bulk of the data is from exploration work completed in the 1970s and 1980s by state-owned Wismut company, Saxore completed since 2013 a confirmation channel sampling, a bulk sampling program in Hämmerlein and a confirmation drilling program at Dreiberg. Historic Sampling: · The historic sampling is based on diamond core drilling, and channel sampling where the underground exploration drifts did cut mineralisation and drilling was not possible. · Sampling was done based on standardized operating procedures following the standards at that time. · Channel sampling was done using an angle grinder to cut two 2cm deep cuts 10 cm apart with the material between the two cuts removed with a compressed air jackhammer. · Drill core was logged and marked up for sampling under geological control with 1 m being the dominant sample interval and thereafter, core was split into halves using a core splitter. One half was stored for further geological, mineralogical, and processing investigations and the other half was used for further sample preparation and analysis. · The half-core sample was crushed in 2 steps. In the first step, the sample was crushed with a double-toggle jaw crusher to 100 % passing 10 mm. A single-toggle jaw crusher was then used to crush the entire sample to below 1 mm. After homogenization, the sample was divided until a representative 400 g subsample was achieved. This sample was milled to a powder in the last stage by using a vibratory disc mill. The resulting 400 g sample had to fulfil the requirement of 95 % <65 μm. This was tested internally as well as by external controls. From this final 400 g sample, all sub-samples for different analysis. Confirmation Sampling (Saxore): · From 2013 onwards, Saxore collected and assayed a variety of samples as part of the project development. In 2015, Saxore executed a targeted sampling programme comprising 66 channel samples from accessible areas in Hämmerlein. A total of approx. 2.2 t of material was taken. Samples were subjected to a variety of bench-scale tests including sorting, dense media separation, magnetic separation, flotation, and gravity. · The channels were cut using an electric rock saw and jackhammer and were mainly cut V-shaped approximately 10-15 cm wide and max. 11 cm deep. The material was then chiselled out using the jackhammer. · Diamond drilling was used to obtain 1 m samples, depending on the lithology of HQ core which was sawn in half longitudinally. The half core was bagged and sent to ALS Global for assaying. This is industry standard work. · No samples from Reverse Circulation (RC) drilling were used · All core samples intersected the main Dreiberg skarn were sent for assay after being logged by the geologist. · All drilling samples of the main skarn and intervals approximately 10 to 20m above and below the skarn were analysed. |
드릴링 기술 | · 드릴 유형(예: 코어, 역순환, 구멍 뚫린 해머, 회전식 공기 분사 장치, 오거, 방카, 소닉 등) 및 세부 사항(예: 코어 직경, XNUMX중 또는 표준 튜브, 다이아몬드 테일 깊이, 얼굴 샘플링 비트 또는 기타 유형) , 코어가 지향되는지 여부와 그렇다면 어떤 방법으로 등). | Historic Drilling: · Four main phases of drilling have been undertaken from 1966 to 1991 from surface and underground · All drill-core was 56mm in diameter (between NQ and HQ) but for areas of difficult ground bigger core sizes were used. There is no indication of how much difficult ground was encountered. The 1970-75 drilling used an SBU SIF-650 surface rig (rated to 1000m) and a SIF-300 and SIF-650 underground rigs. Downhole geophysics was completed for the surface holes and most of the underground holes but no digital data is available. The 1976-1981 underground drilling campaign used a GP-1 and BSK-2m-100 drilling rigs. Confirmation Drilling: · The primary aims were to confirm historic grades and upgrade parts of the inferred resource to the next higher category in accordance with the JORC Code (2012) by expanding the data base in the thick skarn seams. Between 20 August 2022 and 23 April 2023, surface drilling was carried out. The project was coordinated by Saxore and the drilling work was carried out by GEOPS Bohrgesellschaft mbH and later by Pruy KG, Gesteins-, Bohr- und Umwelt-Technik. · Diamond drilling was undertaken by the contractor GEOPS Bohrgesellschaft mbH. All drilling used PQ or HQ bits. Directional drilling was done in NQ which was redrilled in HQ. Drill rods were stabilized and triple tubing was used to ensure good core recovery and avoid washing out of cassiterite. · Drilling was at an angle of -69° to-79° and hence cuts across the skarn seams that are sub-horizontal. · GEOPS Bohrgesellschaft mbH used drilling rigs from Atlas Copco Crealius. The drilling by Pruy KG was carried out with a HD 110 coring drilling rig mounted on a crawler. A total of 8 drill holes with a total length of 4365.7 m were drilled from 3 drill sites (including three test holes from Pruy from collar SaxDRE036). · The holes drilled by GEOPS Bohrgesellschaft mbH in the period from 20 August 2022 to 30 December 2022 were cored. Drilling without coring was performed at the top, where a standpipe was drilled and in sections where directional drilling was carried out to reach the target (downhole motor). Drill holes started with PQ diameter and changed to HQ at a certain depth. NQ for pre-drilling was necessary for directional drilling in some parts. · Drilling by Pruy KG in the period from 15 April 2023 to 22 April 2023 was carried out using a RC method, whereby the rock is crushed at the bottom of the hole and transported to the surface by compressed air in an inner tube and thus preventing contamination. Systematic sampling did not take place. · All drilling, depth control and recovery was supervised by project geologists |
드릴 샘플 회수 | · 코어 및 칩 샘플 회수 및 평가 결과를 기록하고 평가하는 방법. · 샘플 회수를 최대화하고 샘플의 대표적인 특성을 보장하기 위해 취한 조치. · 샘플 회수와 등급 사이에 관계가 있는지 여부와 미세/거친 재료의 우선적 손실/이득으로 인해 샘플 편향이 발생했을 수 있는지 여부. | Historic Drilling: · Recovery data was supplied as a decimal fraction of the measured length which HSC converted to a percentage. The data contained recoveries for both channel sampling and diamond drilling. HSC reviewed recoveries for the three mineral zones only, primarily to establish if there was any bias with either the sampling methods or with the tin grades. In all instances average recovery was greater than 97% with 98.5%, 97.6% and 97.3 % for Hämmerlein, Dreiberg and Zweibach respectively. No bias with either the sampling method or the tin grade was observed. Confirmation Drilling: · All core intervals are measured and compared with driller's marks to determine actual recovery. Recovery was generally above 95% apart from isolated intervals with poor ground conditions, generally either near surface or in fault zones. During directional drilling no core or cuttings could be sampled. The loss for these areas was 100%. · No systematic core loss in mineralised zones was noted. · During coring, core recovery in fresh rock was generally above 95 %, with the exception of disturbed or brecciated areas. During directional drilling no core or cuttings could be sampled. The loss for these areas was 100 %. It was agreed with the drill contractor that directional drilling would no longer be used 100 metres above the target depth. No systematic core loss was detected. |
로깅 | · 코어 및 칩 샘플이 적절한 광물 자원 추정, 채광 연구 및 야금 연구를 지원하기 위해 지질학적 및 지반 공학적으로 세부 수준으로 기록되었는지 여부. · 로깅이 본질적으로 정성적인지 정량적인지 여부. Core (or costean, channel, etc) photography. · 기록된 관련 교차로의 총 길이 및 백분율입니다. | 역사적인 · Logging consisted of hand-written detailed hardcopy log sheets completed by Wismut that have been transcribed into digital data by Beak Consultants (based in Freiberg, Germany). This included using numeric codes for the different lithotypes (Appendix 2). The quality of the logging is good and includes the added bonus of graphic logs. · The main items have all been captured in the digital database including the drill intervals, lithology, recovery and assay data. · The captured data has been compared with original drill logs by Saxore for much of the database, as part of a manual resource estimation. Only minor errors were noted and no significant problems were found in the data checked. · Validation of the drillhole database by HSC included reviewing of 50 randomly selected hardcopy drillogs for the three areas and comparing numbers etc for downhole surveys, geological logging and assays. No significant issues were noted. · No core remains available for viewing. All core was destroyed with the cessation of the uranium mining. 확인: · All diamond drill cores have been geologically logged and photographed (wet and dry) to a level of detail to support appropriate mineral estimation, mining, and metallurgical studies. · A logging of RC cuttings was omitted as no mineralisation was expected in the near surface area of the planned RC hole. |
서브샘플링 기술 및 샘플 준비 | · 코어인 경우 절단 또는 톱질 여부 및 XNUMX/XNUMX, 절반 또는 전체 코어를 취합니다. · 코어가 아닌 경우 리플, 튜브 샘플링, 로터리 스플릿 등, 습식 또는 건식 샘플링 여부. · 모든 샘플 유형에 대해 샘플 준비 기술의 특성, 품질 및 적합성. · 샘플의 대표성을 최대화하기 위해 모든 하위 샘플링 단계에 채택된 품질 관리 절차. · 샘플링이 현장 복제/하반기 샘플링에 대한 결과를 포함하여 수집된 현장 자료를 대표하도록 하기 위해 취한 조치. · 샘플 크기가 샘플링되는 재료의 입자 크기에 적절한지 여부. | 역사적인: · Assaying of Sn was carried out using the device "MAK-1" (until 1974) and "Romul-EFA" (from 1974). Assays of MAK and EFA were performed on site using a 5 g split of the sample collected as described above. · The MAK-1 device ('Mössbauer-Analysator für Kassiterit': Mössbauer analyzer for cassiterite, which is a Gamma-ray fluorescence analyzer) only determines the content of oxidic Sn, as this device does not detect Sn in silicate minerals and others (e.g., stanine). These values were recorded in the database in the column "Sn_pc_MAK". · The "Romul-EFA" device ('Element Fluoreszenz Analyzer', which is an X-ray fluorescence analyzer) measures the total Sn content with its two-channel elemental phase analyzer, regardless of its mineralogy. These values were recorded in the database in the column "Sn_pc_EFA". · MAK and EFA was carried out on a 5 g chip sample at the mine site in the laboratory in Pöhla. This was followed by spectral analysis (AES) of all samples for the elements Zn, Pb, Cu, In, Cd, As, W, Ag, As and Bi, whereby the prioritization of the elements to be analyzed varied and changed over time. Elements such as B, Ni, Co, but also F, P, Mn, Zr, V, Cr, Sr, Ge, Nb, Ta, Sb, Se, Ga, Au, Y, La and Ce were also analyzed spectroscopically over time and ranges. If the upper detection limit was overrated, X-ray fluorescence analyses were performed for the elements Zn, Pb, Cu, As, W, Bi and Cd. If the upper detection limit for the elements Cu and In was exceeded, further atomic absorption spectrometric analyses (AAS) was carried out. · Iron and zinc were analyzed using FAAS, with total iron reported as Fe2O3. DMT notes that total iron includes Fe hosted by all Fe-bearing minerals reported in the skarn mineralogy including magnetite, amphiboles, garnets, chlorite and Fe-rich sphalerite, etc. 확인: · The drill core samples were sent to certified ALS Laboratory in Rosia Montana, Romania. · At the ALS laboratory in Rosia Montana, the sample of core is crushed and split to around 1kg to finer than 2 mm using method CRU-31, then pulverized in a mill to 85% finer than 75µm using method PUL-32. · Analysis of the diamond drill samples consisted of a four-acid digest and ICP-AES for 33 elements. The samples were also assayed for Sn and In using a lithium borate fusion and ICP-MS technique. If over detection limits on the ICP was reached, then the samples were assayed using XRF. |
분석 데이터 및 실험실 테스트의 품질 | · 사용된 분석 및 실험실 절차의 특성, 품질 및 적절성과 해당 기술이 부분적 또는 전체적 것으로 간주되는지 여부. · 지구 물리학 도구, 분광계, 휴대용 XRF 기기 등의 경우 기기 제조업체 및 모델, 판독 시간, 적용된 교정 계수 및 파생 등을 포함하여 분석을 결정하는 데 사용되는 매개변수입니다. · 채택된 품질 관리 절차의 특성(예: 표준, 공백, 중복, 외부 실험실 검사) 및 허용 가능한 수준의 정확도(즉, 편향 부족) 및 정밀도가 설정되었는지 여부. | 역사적인: · The devices of EFA and MAK were tested under certain circumstances on samples of the Tellerhäuser deposit and fulfilled the requirements considering accuracy, sensibility, stability, reliability, and speed. The technique appears to be very accurate up to 10% Sn but this is the maximum value it can usefully detect, with anything over 10% Sn being reported as simply >10% Sn. · In order to control EFA and MAK an additional 5 g split of the original 400 g pulverised sample was collected at regular intervals (approximately 1 in 10) and sent to an external laboratory, Grüna (Central laboratory of SDAG Wismut) where it was analysed by a wet chemical method. The working routine was started with an alkali fusion with Na2O2/NaOH fluxing reagent (sample/reagent = 1/10). Leaching was undertaken with distilled water and neutralized with HCl. Three grams of aluminium were added to this solution to create reducing conditions. Small grains of calcite were added to ensure the production of CO2 and thus prevent the influence from oxygen in the air. This tin solution then underwent a titration process with iodine utilizing the reaction Sn2+ + I2 → Sn4+ + 2 I. By adding small drops of 0.1 molar iodine solution to the dissolved sample, an abrupt colour change from transparent to blue appears at a certain level of added iodine. Each 1 ml of added reagent corresponds to 0.5935 mg Sn in the sample. By using the simple rule of proportion, the tin grade of the original sample was thus calculated. These values were recorded in the database in the column "Sn_pc_Chemie". · An additional 5 g split of the original 400 g sample was collected at regular intervals and sent to a third laboratory as a check for the three techniques described above. This was undertaken in the laboratory of the Ehrenfriedersdorf tin mine and used the same assay technique as the Grüna Laboratory (Central laboratory of SDAG Wismut), as described above. · Assaying was checked by internal and external control analyses. The measuring devices in the laboratories were calibrated daily. Calibration was performed as standard on the basis of various defined content classes. · Within the sample batches, a minimum of 1 standard per 20 samples was prescribed, but the rule was 1 in 10. These standards were made from different materials of different content classes and had different qualities in order to check the accuracy. The standard measurements were recorded in the laboratory and kept in the archive. Only the sample results were communicated to the client (SDAG Wismut laboratory order). 확인: · Tin is a difficult element to analyse as cassiterite is not soluble in acid. Thus, a sub-sample of the pulverized and mixed material is taken and fused with lithium borate. The fused bead is then analysed by a mass spectrometer using method ME-MS85 which reports Sn and In. This returns a total tin content, including tin as cassiterite. Over limit assays of tin are re-analysed using method ME-XRF15b which involves fusion with lithium metaborate with a lithium tetraborate flux containing 20% NaNO3 XRF 마감 처리. · Other elements are analysed by method ME-ICP61. This involves a 4 acid (HF-HNO3-HCLO4 digest, HCl leach and ICP-AES finish). This is an industry standard technique for Cu, Pb, Zn and Ag. A suite of 33 elements is reported, including tin, which is only acid soluble tin in this case and thus can be subtracted from the fusion tin assays to obtain tin as cassiterite. The acid soluble tin is generally associated within the lattice of silicates and Fe-oxides. It is in some part significant as it has a main impact on tin recovery. · Prior to dispatch of samples, the following QA/QC samples are added: · Certified standards representative of the grades expected are added at the rate of 1 in 20 samples. · Blanks are added at the rate of 1 in 20 samples. |
샘플링 및 분석 검증 | · 독립 또는 대체 회사 직원이 중요한 교차로를 확인합니다. · 쌍둥이 구멍의 사용. · 기본 데이터의 문서화, 데이터 입력 절차, 데이터 검증, 데이터 저장(물리적 및 전자적) 프로토콜. · 분석 데이터에 대한 조정에 대해 논의합니다. | 역사적인: · Due to the privatization of the laboratories in the 1990s, a large part of the archive data was destroyed. As a result, there is hardly any information about the standards used and the control analyses determined. But corresponding results of the control analyses and error estimates are documented in the report. 확인: · Twinning of the previous Wismut drill hole S21 show acceptable reproduction in hole SaxDRE034. · Results of Certified Reference Materials for Sn show acceptable reproduction of certified values. Thus, analysis method is assessed as appropriate to have produced reliable results on a level of confidence required for resource estimation · Results of Blanks for Sn demonstrate that a cross-contamination during sample preparation and analysis is not observed. · Internal quality control by ALS included the following additional analyses: CRMs for each analytical method, blanks and duplicate measurements of the drill core samples submitted. Blanks: all analysed internal blanks had values of <0.5 ppm Sn. Duplicates: all showed very good agreement for the different analytical methods as shown in the following plots. |
데이터 포인트의 위치 | · 광물 자원 추정에 사용되는 드릴 구멍(칼라 및 다운 홀 조사), 도랑, 광산 작업 및 기타 위치를 찾는 데 사용되는 조사의 정확성 및 품질. · 사용된 그리드 시스템의 사양입니다. · 지형 제어의 품질 및 적절성. | · All location information is in metric projected coordinate reference system UTM ETRS89 Zone 33N as measured or transformed from historic reference systems by Saxore. 역사적인: · In the 1976 to 1981 drilling campaign, drill collars were surveyed in using a closed loop theodolite method tied in to the national grid. It is uncertain if this method was used for the earlier or later drilling campaigns. · Downhole surveys for the early drilling were measured using a Multigraph Inclinometer at 10 to 25m intervals. This apparatus had an accuracy of 0.5° for the dip angle and 3° for the azimuth. The final phase of drilling saw the use of camera surveys although no details are known. All survey data in the database were generated by using detailed surveyed points in hardcopy level plans, which show accurate collar, downhole survey and end of hole locations and RL (height above mean sea level) for each of these points. 확인: · All drill holes are pre-planned and located by use of a handheld GPS. Holes were originally sited and angled using compass and clinometer. Prior drilling, hole collars were surveyed with tachymeter from accurately surveyed official fixed-points due to the lack of GPS signal and mobile connection. This was changed to the use of Devico gyro navigation for the later downhole survey in order to get an added level of accuracy. · GEOPS carried out down-hole orientation surveys with measurements at 25 m intervals, while Pruy KG measurement spacing was approx. 50 m.
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데이터 간격 및 분포 | · 탐색 결과 보고를 위한 데이터 간격. · 데이터 간격 및 분포가 광물 자원 및 광석 매장량 추정 절차 및 적용된 분류에 적합한 지질 및 등급 연속성의 정도를 설정하기에 충분한지 여부. · 샘플 합성이 적용되었는지 여부. | 역사적인: · Drilling was done from 50 m spaced drifts in 10 m distanced stations, each station having 1 to 3 holes drilled as fan to the mineralization below or above the drift plus 5 m spaced channels when the drift is intersecting the mineralisation · Predominant sample length is 1 m for both the drilling and channels · The data spacing and distribution is sufficient to establish and suitably classify Mineral Resource Estimates. · For Sn a sufficient amount and density of data was available in Hämmerlein to produce variograms in acceptable quality for the domain of Skarn and Mineralised Schist. Thus, the resulting parameters were used to interpolate Sn in domains of Skarn and Mineralized Schist using OK for all the areas of Tellerhäuser project area. · For Fe2O3, Zn, Ag, Cu, WO3, In, Bi, Ge, As, Cd IDW was applied due to limited amount and distribution of these assays. · Around 6 % (holes) and 3 % (channels) of sample intervals are above 1 m. Thus, a sample compositing is assumed. 확인: · The original drilling undertaken was intended to be better than a 50m x 50m spacing. · Twin drilling was used to verify the historical drilling, check its geological units and verify the geochemical results. · 원래 데이터 간격은 적용된 JORC 분류에 적합한 지질학적 및 등급 연속성의 정도를 확립하기에 충분한 것으로 간주됩니다. |
지질 구조와 관련된 데이터의 방향 | · 샘플링 방향이 가능한 구조의 편견 없는 샘플링을 달성하는지 여부와 이것이 알려진 정도는 증착 유형을 고려합니다. · 드릴링 방향과 주요 광물 구조의 방향 사이의 관계가 샘플링 편향을 도입한 것으로 간주되는 경우 이를 평가하고 중요한 경우 보고해야 합니다. | 역사적인: · The drill orientation is approximately perpendicular to mineralized skarn units and does not appear to introduce bias. · The schist mineralisation at Hammerlein has both a sub-vertical and sub-horizontal component and hence the mainly sub-vertical drilling may not be optimal for some of the sub-vertical structures.
확인: · No orientated drilling was carried out. · The skarn seams are sub-horizontal and the drilling is angled at between -69° and -79° to be as close as possible to cutting across the skarn seams at 90°. · As drilling was designed to intersect the main skarn seams at as high an angle as possible. The potential for any introduced sampling bias is considered minor. |
샘플 보안 | · 샘플 보안을 보장하기 위해 취한 조치. | 역사적인: · This was an active uranium mining area during GDR times and security was thus very tight. No reason to suspect any security issues can be found. 확인: · All core and sample material was stored and investigated in a locked facility. All transportation was done by authorized personnel only. Sample transportation was cross-checked by sample list completeness of amount of samples and sample weight. |
감사 또는 검토 | · 샘플링 기술 및 데이터에 대한 감사 또는 검토 결과. | 역사적인: · Audits and reviews were conducted at regular intervals during the GDR era but results are not currently available. The GDR era estimates are classified between C1 and Delta category which require audits by the central authorities. · Audits and reviews have been done by HSC in 2019, BARA in 2021 · The techniques of sampling, QA/QC methods and quality of the historic data was assessed as appropriate to be used for resource estimation |
제2절 조사결과 보고 (이전 섹션에 나열된 기준이 이 섹션에도 적용됩니다.) | ||
기준 | JORC 코드 설명 | 해설 |
광물 아파트 and land tenure status | · 유형, 참조 이름/번호, 합작 투자, 파트너십, 우선 적용되는 로열티, 고유 소유권 이해 관계, 유적지, 야생 또는 국립 공원 및 환경 설정과 같은 제XNUMX자와의 계약 또는 중요한 문제를 포함한 위치 및 소유권. · 해당 지역에서 운영할 수 있는 면허를 취득하는 데 알려진 장애와 함께 보고 당시 보유하고 있는 임기의 보안. | · First Tin, via its 100% owned subsidiary Saxore, holds a valid Mining Licence (ML) for the extraction of mineral resources for the "Rittersgrün" field which contains the Tellerhäuser Project, consisting of the Hämmerlein and Dreiberg resources. The mining licence was issued in compliance with the German Federal Mining Act and is valid until the 30th June 2070. · The mineralisation is secured by the Breitenbrunn Erlaubnis (exploration permit). It is 100% owned by Saxore Bergbau GmbH. This licence is valid for Sn, W, Mo, Ta, Be, Cu, Pb, Zn, Ag, Au, Ge, In Fe, Fluorite and Baryte. · A pre-existing Bewilligung (mining permit) exists over radioactive minerals but this is owned by Wismut GmbH, a Federal Government company tasked with clean-up of previous uranium mining activities which is not allowed to undertake any mining activities. It is currently only treating water run-off from the old mine. · The area is in a region of spruce and mixed forests. The environment has been effected in the past by previous mining activities. No immediate environmental impediments are obvious other than the disturbance caused by vehicle movement on surface and initial development from surface. |
Exploration done by other parties | · 다른 당사자의 탐색 승인 및 평가. | · Significant work was undertaken by a Soviet - East German joint venture and these activities for the basis of the current resource estimate. No other activities are known in the project area. |
지질학 | · 광상 유형, 지질학적 환경 및 광물화 스타일. | · The mineralisation consists of skarn, overprinted skarn, and schist hosted sub-vertical and sub-horizontal greisen veins. It is hosted within Cambrian to Ordovician meta-sediments intruded by Carboniferous to Permian aged granites. Metamorphism is generally under greenschist to amphibolite facies conditions. The granites are generally accepted as the source of the tin mineralising fluids which have subsequently deposited tin and other associated elements in chemically and structurally favourable settings when pressure, temperature and physico-chemical conditions were optimal. In particular, originally calcareous beds have acted as a very good chemical trap for the ascending tin rich fluids, being metasomatised to a skarn assemblage. However, a significant, later, retrograde event associated with chlorite minerals, has deposited a significant amount of coarse cassiterite (SnO2) and hence the deposit is not a "typical" skarn tin deposit. · The overprinted skarn are sub-horizontal zones between 1m and 15m true thickness (averaging about 3m) that are several hundred metres wide and several thousand metres long. These consist of amphibole, garnet, pyroxene, feldspar, magnetite, cassiterite, sphalerite and other sulphides. These have been subsequently partially metasomatised under retrograde conditions which has resulted in chloritic alteration fronts with coarse quartz-cassiterite segregations and veins. Cassiterite has been deposited in both the prograde and retrograde metasomatic events and occurs in both coarse and fine grained (less than 50 micrometres) forms. · These seams are very continuous geologically and can be traced over several kilometres. However, several generations of mineralisation are evident and the paragenesis is complex. Faulting and parting also effects the skarn units. · The Hämmerlein skarn has associated schist hosted greisen style mineralisation that occurs as both sub-vertical and sub-horizontal quartz-feldspar-tourmaline-cassiterite veins immediately below the main skarn unit. These form a sheeted to stockwork vein array which has been located up to 30m below the main skarn and is open at depth. It is suspected that this zone may have significant depth potential due to its partially sub-vertical disposition but has not been adequately drill tested below about 30m beneath the Hämmerlein Seam. |
드릴 구멍 정보 | · 모든 재료 드릴 구멍에 대한 다음 정보의 표를 포함하여 탐색 결과의 이해를 위한 모든 정보 재료 요약: o 드릴 구멍 칼라의 동쪽 및 북쪽 o 드릴 구멍 칼라의 고도 또는 RL(Reduced Level - 해발 고도(미터)) o 구멍의 딥 및 방위각 o 다운 홀 길이 및 차단 깊이 o 구멍 길이. · 정보가 중요하지 않고 이 제외가 보고서의 이해를 저해하지 않는다는 근거로 이 정보를 제외하는 것이 정당한 경우, 권한 있는 담당자는 그 이유를 명확하게 설명해야 합니다. | · This project is resource status, not exploration status |
데이터 집계 방법 | · 탐색 결과를 보고할 때 가중 평균화 기술, 최대 및/또는 최소 등급 절단(예: 고급 등급 절단) 및 컷오프 등급은 일반적으로 재료이며 명시되어야 합니다. · 집계 인터셉트가 짧은 길이의 높은 등급 결과와 긴 길이의 낮은 등급 결과를 통합하는 경우 이러한 집계에 사용된 절차를 명시해야 하고 그러한 집계의 몇 가지 전형적인 예를 자세히 보여야 합니다. · 금속 등가 값의 보고에 사용된 가정은 명확하게 명시되어야 합니다. | · This project is resource status, not exploration status |
광물화 폭과 절편 길이 간의 관계 | · 이러한 관계는 탐색 결과 보고에서 특히 중요합니다. · 드릴 구멍 각도에 대한 광물화의 형상을 알고 있는 경우 그 특성을 보고해야 합니다. · 그것이 알려지지 않고 다운홀 길이만 보고되는 경우, 이 효과에 대한 명확한 설명이 있어야 합니다(예: '다운홀 길이, 실제 너비는 알 수 없음'). | · This project is resource status, not exploration status |
다이어그램 | · 보고되는 중요한 발견에 대해 적절한 지도와 섹션(축척 포함) 및 절편 표가 포함되어야 합니다. 여기에는 드릴 구멍 고리 위치의 평면도와 적절한 단면도가 포함되지만 이에 국한되지 않습니다. | · This project is resource status, not exploration status |
균형 보고 | · 모든 탐색 결과에 대한 포괄적인 보고가 실행 가능하지 않은 경우 탐색 결과의 잘못된 보고를 방지하기 위해 낮은 등급과 높은 등급 및/또는 너비의 대표적인 보고가 실행되어야 합니다. | · This project is resource status, not exploration status |
Other substantive exploration 데이터 | · 의미 있고 중요한 기타 탐사 데이터는 다음을 포함하되 이에 국한되지 않고 보고되어야 합니다. 지질학적 관찰; 지구 물리학 조사 결과; 지구 화학 조사 결과; 대량 샘플 - 크기 및 처리 방법; 야금 시험 결과; 부피 밀도, 지하수, 지반 공학 및 암석 특성; 잠재적인 유해 또는 오염 물질. | · This project is resource status, not exploration status |
추가 작업 | · 계획된 추가 작업의 특성 및 규모(예: 측면 확장 또는 깊이 확장 또는 대규모 스텝아웃 드릴링 테스트). · 이 정보가 상업적으로 민감하지 않은 경우 주요 지질학적 해석 및 향후 시추 지역을 포함하여 가능한 확장 영역을 명확하게 강조하는 다이어그램. | · This project is resource status, not exploration status |
제3절 광물자원의 추정 및 보고 (섹션 1에 나열된 기준 및 섹션 2와 관련된 경우 이 섹션에도 적용됨) | ||
기준 | JORC 코드 설명 | 해설 |
데이터베이스 무결성 | · 데이터가 초기 수집과 광물 자원 추정 목적으로 사용되는 사이에 전사 또는 키 입력 오류 등으로 인해 데이터가 손상되지 않았는지 확인하기 위한 조치입니다. · 사용된 데이터 검증 절차. | · All historic data was in hardcopy format and has been initially digitised and compiled to a drillhole database in MS Access by local consultants (Beak Consultants GmbH). · Checks by both Beak and Saxore has found only minor errors and the digital data is considered to be of good quality. · Several audits by Bara and HSC checked the database for consistency. Original paper logs were inspected and compared to the database and the database was assessed to be acceptable for resource estimation. · In 2023 Saxore added further data from confirmation drilling and a significant amount of further historic data from Wismut to the MS Access drillhole database. The focus was on the intervals with low grade Sn but concentrations of other elements of potential viability, e.g. Fe2O3, Zn, Ag, Cu, WO3, In, Bi, Ge, As, Cd. · The precision and accuracy of the analytical techniques appears appropriate for mineral resource estimation. · The updated database was checked for consistency. Only minor error were found which are assessed to have no material impact on the resource estimate. · In consequence, DMT assesses that all analysis results are accurate, precise and representative to be used for a resource update. |
사이트 방문 | · 적임자가 수행한 모든 현장 방문 및 해당 방문의 결과에 대해 논평하십시오. · 현장 방문이 없는 경우 그 이유를 표시하십시오. | · A site visit was conducted by Ernst Bernhard Teigler (CP Resources Review) from 4th to 5th April 2022 to inspect the drilling operations at Dreiberg. · A site visit to the visitor's mine was conducted by Ernst Bernhard Teigler (CP Resources Review) with Florian Lowicki (CP Resources) and Andreas Hees (CP Metallurgy) from 4th to 5th September 2022. · The study team were accompanied by Thomas Kleinsorge (Project Director Saxore Bergbau GmbH) and Eric Hohlfeld (Project Geologist Saxore Bergbau GmbH) · An underground site visit was conducted to inspect the geology of the Hammerlein deposit and discussions relating to the geology were undertaken. |
지질 해석 | · 광물 매장지의 지질학적 해석에 대한 확신(또는 반대로 의 불확실성). · 사용된 데이터 및 가정의 특성. · 광물 자원 추정에 대한 대안 해석의 효과(있는 경우). · 광물 자원 추정을 안내하고 통제하는 지질학의 사용. · 등급 및 지질학의 연속성에 영향을 미치는 요인. | · Earlier interpretations of HSC and BARA described the Tellerhäuser tin mineralization as dominantly hosted in laterally continuous Skarn units. · DMT reviewed the existing models of Skarn units and found, that many intervals of rocks other than Skarn were included in the modelled domain to achieve continuous Skarn units. · DMT found that the skarn structure is hosted largely stratabound but with many short-range attenuations and/or split-offs. The same appearance can be observed for the mineralization hosted in the schist units underlying the skarn. · Following this interpretation concept, a domain model was prepared in Leapfrog Geo Software (Version 2023.1) using an implicit modeling methodology including Leapfrog's 'Vein Interpolator' and 'Pinch-out Tool'. · Two mineralization types Skarn and Mineralised Schist were defined following geological logs and Sn grades. For Skarn, all intervals logged as skarn were considered for modelling. For Mineralised Schist, only intervals logged as Schist with above 0.05 % Sn were considered. · A first global filter was applied to the Skarn samples filtering all lithological intervals ≥ 2 m. A first solid was generated from the 'Vein Interpolator' considering only these samples (≥2 m) to get an idea about lateral continuity, thickness, and orientation of the main skarn body. Following the trend of this main skarn body all intervals even shorter than 2 m were selected manually using the 'Interval Selection' tool. The interval selection tool works like a paintbrush to select samples. After selection these skarn intervals were set into new domains, which then were modelled to layered to lens-shaped domain bodies using the 'Vein Interpolator' and 'Pinch-out Tool'. · In the case two or more sequenced intervals were selected, the 'Vein Interpolator' used topmost and lowermost footwall- and hanging wall contact and all non-Skarn intervals in-between were included to the domain. However, the benchmark was set to a maximum of 25 % on non-domain rocks in the domain. · Skarn was subdivided into 3 domains: Main Skarn (domain 1), Skarn Lenses above Main Skarn (domain 2), and Skarn Lenses below Main Skarn (domain 3). Mineralised Schist was assigned to domain 4. A fifth domain of Schist (domain 5) was set as background lithology. This domain pattern was initially established for Hämmerlein area. The Main Skarn and Mineralized Schist was modelled continuously, while the Skarn lenses were modelled using the Pinch-out Tool. For the resource update of the Tellerhäuser project area, it was decided to apply the Pinch-out Tool to all domains in order to avoid non-Skarn rocks in Skarn domain and non-mineralised schist in Mineralised Schist domain. · The fault model supplied by Saxore (done by HSC in 2019) was applied to the model. · In order to honour the very short-range variations in thickness and to enable Leapfrog to model the domain bodies accordingly, the surface resolution was set to very low values of around 1 or 2 m. · Some database inconsistencies of overlapping data caused by incorrectly entered drilling orientation of fan drilling made implicit modelling fail for these overlapping hole information, which was solved by using support points to guide the implicit model. · For all modelled volume bodies, a volume reduction was carried out considering existing exploration workings including a shield of 6 m radius around the centerline of these workings. A clipping operation was performed in Leapfrog. The Clip Volume is used to outersect the volume body of 6 m-shield from the domain solids. · Overall, 27 volume bodies were modelled, 5 in Hämmerlein (3 layers of Skarn, 2 layers of Mineralised Schist), 14 in Dreiberg (all Skarn), 8 in Zweibach (7 layers of Skarn, 1 layer of Mineralised Schist) · A block model was generated with the dimensions 10mx10mx1m. The limits used were the same limits defined in the domain model. A volume percentage attribute was calculated for each of the 27 volume bodies reduced by existing workings including the surrounding shield. Volume percentage was calculated in order to ensure 100 % match between volume bodies and block model volume. · Then, the 27 volume percentage attributes were unified (summed) to 5 attributes representing each of the five domains: main Skarn layer (domain 1), Skarn lenses above main Skarn (domain 2), Skarn lenses below main Skarn (domain 3), Mineralized Schist (domain 4) and schist as back ground (domain 5). Two integer attributes listing the number of layer bed running from 1 to 27 and the domain number running from 1 to 5. |
크기 | · 길이(파업 또는 기타), 평면 너비 및 광물 자원의 상한 및 하한까지의 표면 아래 깊이로 표현되는 광물 자원의 범위 및 변동성. | · The Hämmerlein skarn is relatively flat lying with horizontal to 10 degrees dip to the SE. Skarn is interpreted to measure 2 km down dip and 1.5 km across strike. It averages in thickness to around 2 m with maximum of 4 m (StdDev or 66 Percentile). Mineralised Schist follows the Skarn above and below with average thickness of around 6 m with maximum of 15 m (StdDev or 66 Percentile). Mineralization is 200-300 m below the surface. · The Dreiberg skarn continuous to SE and is also relatively flat lying with horizontal to 10 degrees dip to the SE. Skarn is interpreted to measure 3.3 km down dip and 1.3 km across strike. It averages in thickness to around 3 m with maximum of 6 m (StdDev or 66 Percentile). Mineralization is 300-1000 m below the surface. · The Zweibach skarn is relatively flat lying with horizontal to 10 degrees dip to the SE parallel to Dreiberg but separated with 300 m offset by a SE running normal fault. Skarn is interpreted to measure 2.3 km down dip and 0.6 km across strike. It averages in thickness to around 2 m with maximum of 4 m (StdDev or 66 Percentile). Mineralised Schist follows the Skarn below with average thickness of around 23 m with maximum of 46 m (StdDev or 66 Percentile). Mineralization is 200-300 m below the surface. |
추정 및 모델링 기법 | · 극한 등급 값의 처리, 도메인 지정, 보간 매개변수 및 데이터 포인트로부터의 최대 외삽 거리를 포함하여 적용된 추정 기법의 특성 및 적합성 및 주요 가정. 컴퓨터 보조 추정 방법을 선택한 경우 사용된 컴퓨터 소프트웨어 및 매개변수에 대한 설명이 포함됩니다. · 확인 추정치, 이전 추정치 및/또는 광산 생산 기록의 가용성 및 광물 자원 추정치가 그러한 데이터를 적절하게 고려하는지 여부. · 부산물 회수에 관한 가정. · 유해한 요소 또는 경제적으로 중요한 기타 비등급 변수(예: 산성 광산 배수 특성화를 위한 황) 추정. · 블록 모델 보간의 경우 평균 샘플 간격과 관련된 블록 크기 및 검색이 사용됩니다. · 선택적 마이닝 단위 모델링 뒤에 있는 모든 가정. · 변수 간의 상관 관계에 대한 모든 가정. · 자원 추정치를 통제하기 위해 지질학적 해석이 어떻게 사용되었는지에 대한 설명. · 등급 절단 또는 캡핑을 사용하거나 사용하지 않는 근거에 대한 논의. · 검증 프로세스, 사용된 확인 프로세스, 드릴 구멍 데이터에 대한 모델 데이터 비교 및 가능한 경우 조정 데이터 사용. | · Resource block model was established with block size of X = 10 m, Y = 10 m, Z = 1 m. No sub-blocking was applied · Compositing was done based on 1 m as it is the 90 percentile for both the drill holes and the channels. · Compositing was done for each layer separately. · Outliers were top-cut at 99.9 Percentile in order to exclude around one sample per mille. For resource model diluted and top-cut composites were used, once to treat un-sampled intervals as blank material and once not to bias interpolation by high grade outliers, both in order not to overestimate the resource. · For Sn a sufficient amount and density of data was available in Hämmerlein to produce variograms in acceptable quality for the domain of Skarn and Mineralised Schist. Thus, the resulting parameters were used to interpolate Sn in domains of Skarn and Mineralized Schist by OK for all the areas of Tellerhäuser project area. The other elements Fe2O3, Zn, Ag, Cu, WO3, In, Bi, Ge, As, Cd were interpolated using IDW. · Exponential omnidirectional variogram model for data of Sn in Skarn show a range of 140 m, a nugget of 0.16 and a sill of 0.18 (orientation -10 degrees to SE) · Exponential omnidirectional variogram model for data of Sn in Mineralised Schist show a range of 140 m, a nugget of 0.022 and a sill of 0.022 (orientation -10 degrees to SE) · In order to reduce smoothing effects, the interpolation was done in several passes with increasing sizes of the search ellipsoid, minimum number of composite samples coming from a minimum number of holes · Model validation shows good reproduction of primary data · The resource block model was validated to demonstrate that the applied methodology to model geology and grade has produced a model which is representative to primary data of holes and channels. · This validation focused on the two key factors tonnage and grade of Skarn+Mineralised Schist. Applying Sn cut-off grades to database limited to intersections of Skarn+Mineralised Schist, a percentage of remaining intervals was calculated and compared to percentage of remaining tonnage from indicated resource of Skarn+Mineralised Schist. · The comparison demonstrates that the assayed Sn concentrations from drilling and channels are representatively reflected in the block model. Slight discrepancy is to be expected because of the drill pattern, which does not provide 100 % regular intersections of the mineralisation. The other reason is the typical smoothing caused by the compositing using dilution for un-sampled intervals and interpolation process itself. · Volume domains of mineralisation type of Skarn show good alignment with skarn intersections with only a few exceptions caused by sporadic database errors which are assessed to have no material effect on the resource estimate. However, these should be corrected in future, when historic documentation enables. · Volume domains of mineralisation type of Mineralised Schist include intervals of non-Mineralised Schist in order to produce continuous bodies including the most higher-grade intervals of Sn. The non-mineralised intervals were corrected in the resource model by using diluted composites. · Resource History: In comparison to the indicated resources of HSC 2019, contained tonnage of Sn metal in Skarn+Mineralised Schist could be increased by almost 37% from 33 000 t to 45 000 t considering a Sn cut-off grade of 0.2 % for both Skarn and Mineralised Schist. The main factors for the increase are a higher bulk density derived from additional data and a slightly higher geostatistical range for indicated resources. However, there is a significant increase in sample availability since 2019 and 2023 resource estimate. From 42 726 additional Sn values only 1164 samples were above 0.2 % Sn. The vast majority is below 0.2 % Sn. |
수분 | · 톤수를 건조 기준으로 또는 자연 수분으로 추정하는지 여부 및 수분 함량 측정 방법. | · All tonnage and grade is on a dry basis. |
컷오프 매개변수 | · 채택된 컷오프 등급 또는 적용된 품질 매개변수의 기준. | · Following the development of the Sn price at LME for the last 15 years, the recent price situation and increased demand assumed for future electromobility and renewable energy, the future price is assessed up to 25,000 USD per metric tonne of Sn, refined, 99.85 % purity. · This would correspond to an ROM ore grade of approx. 0.5 % Sn which is assumed to be realized at 0.2 % Sn cut-off grade. Thus, for Skarn and Mineralised Schist a 0.2 % Sn cut-off grade is applied. |
Mining factors or 가정 | · 가능한 채굴 방법, 최소 채굴 치수 및 내부(또는 해당되는 경우 외부) 채굴 희석에 관한 가정. 잠재적인 채굴 방법을 고려하는 것은 궁극적인 경제적 채굴에 대한 합리적인 전망을 결정하는 과정의 일부로 항상 필요하지만 광물 자원을 추정할 때 채굴 방법 및 매개변수에 대한 가정이 항상 엄격한 것은 아닙니다. 이 경우 채굴 가정의 근거에 대한 설명과 함께 이를 보고해야 합니다. | · The Mineral Resources were estimated on the assumption that the material will be mined by an appropriate underground method e.g. room and pillar, stopes. |
Metallurgical factors or 가정 | · 야금술 적합성에 관한 가정 또는 예측의 기초. 잠재적인 야금학적 방법을 고려하는 것은 궁극적인 경제적 추출에 대한 합리적인 전망을 결정하는 과정의 일부로 항상 필요하지만 광물 자원을 보고할 때 만들어진 야금학적 처리 과정 및 매개변수에 대한 가정이 항상 엄격한 것은 아닙니다. 이 경우 야금학적 가정의 근거에 대한 설명과 함께 이를 보고해야 합니다. | · The available metallurgical testwork indicates that tin is recoverable by gravity separation and flotation. · Magnetic separation is required to remove iron as part of the process circuit and iron may be recovered as a by-product. The Company estimates approximately 5% of Iron is present in phases other than Magnetite and Hematite. · It is also expected that zinc will need to be removed by floatation to improve gravity recovery and zinc may be recovered as a by-product. · Indium is expected to report to a copper sulphide concentrate that will be recoverable via flotation. (The Company report that the indium occurs as roquesite, a copper-indium-sulphide). |
Environmental factors or 가정 | · 가능한 폐기물 및 공정 잔류물 처리 옵션에 관한 가정. 채광 및 가공 작업의 잠재적인 환경 영향을 고려하는 것은 궁극적인 경제적 추출에 대한 합리적인 전망을 결정하는 과정의 일부로 항상 필요합니다. 이 단계에서 특히 그린필드 프로젝트의 경우 잠재적인 환경 영향에 대한 결정이 항상 잘 진행되는 것은 아니지만 이러한 잠재적인 환경 영향에 대한 조기 고려 상태가 보고되어야 합니다. 이러한 측면이 고려되지 않은 경우 환경 가정에 대한 설명과 함께 이를 보고해야 합니다. | · Environmental factors have not been investigated for the purposes of the Resource Estimate reported here. · It is expected that processing will be completed underground and the existing underground development will offer some space for disposal of waste materials. |
대부분 density | · 가정 또는 결정 여부. 가정된 경우 가정의 근거입니다. 결정된 경우 습식 또는 건식 여부에 관계없이 사용된 방법, 측정 빈도, 샘플의 특성, 크기 및 대표성. · 벌크 재료에 대한 벌크 밀도는 공극 공간(균열, 다공성 등), 수분 및 퇴적물 내 암석과 변질 구역 간의 차이를 적절하게 설명하는 방법으로 측정되어야 합니다. · 다양한 재료의 평가 과정에서 사용되는 벌크 밀도 추정에 대한 가정에 대해 논의합니다. | · Density is based on measured samples. All samples total to an average bulk density of 3.86 t/m³ for Skarn and 2.88 t/m³ for Mineralised Schist. For the resource model, DMT attributed a bulk density of 2.9 t/m³ to Mineralised Schist and reduced the bulk density of Skarn to 3.6 t/m³ because the Skarn domain may contain up to 25 % schist. · Several cross-checks were done by DMT to confirm the bulk density of the Skarn domain, which comprises different types of skarn with variable proportions of skarn-associated silicates, magnetite, sulphides and quartz. Firstly, DMT reviewed all measurements by checking plausibility of each measurement and attributing ranges of bulk densities plausible for skarn types sensu stricto. The resulting density of skarn is 3.6 t/m³. Secondly, DMT calculated a skarn bulk density of 3.6 t/m³ based on the mineral composition of the bulk sample sent to ALS Burnie and mineral densities from the literature |
분류 | · 다양한 신뢰 범주로 광물 자원을 분류하는 기준입니다. · 모든 관련 요소(즉, 톤수/등급 추정에 대한 상대적 신뢰도, 입력 데이터의 신뢰도, 지질 및 금속 값의 연속성에 대한 신뢰도, 데이터의 품질, 수량 및 분포)를 적절하게 고려했는지 여부. · 결과가 보증금에 대한 담당자의 견해를 적절하게 반영하는지 여부. | · Resource classification within mineralization envelopes for Skarn and Mineralised Schist is generally based on spacing of drill holes and channels, grade continuity, and overall geological continuity. The distance to the nearest composite and the number of drill holes or channels are also considered in the classification. In classifying the resource estimate, the following key factors have been considered: · Confidence in data quality and quantity and specifically sample spacing of Sn data; · Confidence in the geological interpretation and continuity (geological complexity); and · Confidence in mineralization / grade continuity (complexity of spatial grade distribution). · Considering the above, the following criteria have been applied for classification into the various mineral resource categories for this estimate. Half the geostatistical range of 140 m was considered in this classification. · Indicated Resources: · All blocks within the wireframed constraints and 70 m maximum distance to nearest Sn sample and a minimum of 3 composites from a minimum of 2 drill holes or channels. · Inferred Resources: · All blocks within the wireframed constraints and 70 m minimum distance to nearest Sn sample and a minimum of 2 composites from a minimum of 1 drill hole. |
감사 또는 검토 | · 광물 자원 추정치에 대한 감사 또는 검토 결과. | · No audits of the Mineral Resource estimates have been completed. · The estimates of resources have been compared to previous estimates and are comparable. |
상대적 정확도/신뢰도에 대한 논의 | · 해당하는 경우 권한 있는 사람이 적절하다고 간주하는 접근 방식이나 절차를 사용하여 광물 자원 추정치의 상대적 정확도 및 신뢰 수준에 대한 설명. 예를 들어, 명시된 신뢰 한계 내에서 자원의 상대적 정확도를 정량화하기 위한 통계적 또는 지리학적 절차의 적용, 또는 그러한 접근 방식이 적절하지 않은 경우 추정. · 이 진술은 글로벌 또는 지역 추정과 관련되는지 여부를 지정해야 하며, 지역인 경우 기술 및 경제적 평가와 관련되어야 하는 관련 톤수를 명시해야 합니다. Documentation should include assumptions made and the procedures used. · 추정치의 상대적 정확도 및 신뢰도에 대한 이러한 진술은 가능한 경우 생산 데이터와 비교해야 합니다. | · All Resources are classified as Indicated and Inferred. Due to the reliance on legacy data and the inherently erratic nature of Sn grades not measured resource classifications have been applied. · The Mineral Resource Estimates are considered to have sufficient global and local accuracy to allow mine planning in the Indicated resources where tin only is used to determine cut-off grade. · Inferred resources do not have sufficient local accuracy and carry a higher global estimation risk than indicated resources. · The Mineral Resource Estimates of the Tellerhäuser deposits are sensitive to the cut-off grade applied. Increasing the confidence in by product metal estimation may allow for further de risking in select area where further sampling is possible. · Areas of inferred resources require infill drilling to improve confidence in mineral resource estimated. |
RNS는 귀하의 IP 주소를 사용하여 약관 준수 여부를 확인하고, 귀하가 이 커뮤니케이션에 포함된 정보를 사용하는 방식을 분석하고, 그러한 분석을 익명으로 다른 사람과 상용 서비스의 일부로 공유할 수 있습니다. RNS와 런던 증권 거래소가 귀하가 제공한 개인 데이터를 사용하는 방법에 대한 자세한 내용은 개인 정보 보호 정책을 참조하십시오.