공시 • Apr 10
Alma Metals Limited Announces Briggs Copper Project Grows with Updated Mineral Resource Estimate Highlights
Alma Metals Limited announced Briggs Copper Project Grows with Updated Mineral Resource Estimate Highlights. The Mineral Resource Estimate (MRE) for the Briggs Copper Project in Queensland has been updated to include both Indicated and Inferred Resource categories, and for the first time includes silver as a by-product: The MRE extends from surface and the substantial tonnage of Indicated Resource offers the potential for a higher-grade starter pit location. Criteria, JORC Code explanation, commentary, protocols as the core other than not collecting sludge samples at the drill rig to evaluate for fines loss., Quality control procedures for the CRA percussion drilling are not recorded., Verification of sampling and assaying, The verification of significant intersections by either independent or alternative company personnel., The use of twinned holes., Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. Discuss any adjustment to assay data., ALMA/CANTERBURY DRILLING: A thorough review of all Alma, Canterbury and historical data used for the preparation of the MRE was undertaken by Alma geologists and the resource consultant (Trepanier) as part of data validation protocols adopted for the MRE., Three sets of twinned holes occur in the drilling used for preparation of the MRE: Noranda percussion hole PH5 was twinned by CRA RC percussion hole RC93BR3 to a depth of 43m with very good correlation of copper assays., Noranda percussion hole PH4 is closely twined by Alma hole 24BRD0030 and shows very good correlation of geology and assay data; Alma RC hole 21BRD0012 is twinned by Alma core hole 23BRD0016, with good geological and assay correlation., Drill hole 24BRD0032 is a scissor hole for 24BRD0026, and 24BRD0034 is a scissor hole For 24BRD0030. Assay results or 24BRD0032 and 24BRD0034 show reasonable grade continuity between the scissor holes to the extent expected for this style of porphyry mineralisation. Data is stored electronically in a database managed by a data administrator., No adjustments have been made to any assays., Location of data points, Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation., Specification of the grid system used., Quality and adequacy of topographic control., ALMA/CANTERburgY DRILLING: Drill collar coordinates have been determined by Differential GPS survey., Down hole survey data was collected systematically at approximately 30m intervals using an Axis Champ Magshot 2310 digital directional survey tool., Grid references are provided in GDA94 MGA Zone 56, Topographical control has been obtained by Lidar survey. Sample intervals and drill hole locations for the drill holes used to compile the MRE are provided in the body of this report. Data aggregation methods, In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (eg cutting of high grades) and cut-off grades are usually Material and should be stated., Where aggregate intercepts incorporate short lengths of high-grade results and longer lengths of low-grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail., The assumptions used for any reporting of metal equivalent values should be clearly stated., Significant intercepts of Cu and Mo are reported at 0.1% Cu, 0.2% Cu and 0.3% Cu cut-offs and are calculated on a length-weighted basis., Maximum internal dilution is 4m and minimum significant interval is 10m., Relationship between mineralisation widths and intercept lengths, These relationships are particularly important in the reporting of Exploration Results., If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported., If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (eg 'down hole length, true width not known'). Drill holes are predominantly designed to this effect (eg ' down hole length not known'). Drill holes are primarily designed to test across the dominant NW-SE structural grain., Drill holes are predominantly designed to test across the dominantNW-SE structural grain., Diagrams, Diagrams, Diagram's structural grain., Diagrams. Drill holes are predominantly designed to testing across the dominant NW-SE structures, true widths, Diagrams, true widths, Di Instagrams, Diagrams, diagrams, Diagrams.