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Tarachi Gold Announces Positive Metallurgy Results from Magistral Tailings Project
Highlights: Average gold recovery of 83.1% after 12 hours of leaching without grinding. VANCOUVER, BC, Nov. 2, 2021 /CNW/ - Tarachi Gold Corp. (CSE: TRG) (OTCQB
About this update from Tarachi Gold Corp.
[{"type":"text","content":" Highlights: Average gold recovery of 83.1% after 12 hours of leaching without grinding. VANCOUVER, BC, Nov. 2, 2021 /CNW/ - Tarachi Gold Corp. (CSE: TRG) (OTCQB: TRGGF) (Frankfurt: 4RZ) (\"Tarachi\" or the \"Company\") is pleased to announce metallurgical results for the Company's wholly owned Magistral Mill and Tailings Project (\"Magistral\" or the \"Magistral Project\") in Durango, Mexico. The results will be incorporated by Ausenco Engineering into the preliminary economic assessment that is nearing completion for the Magistral Project. Total gold recovery after 48 hours of leach time ranged from 81.7 to 86.9% on as-received, unground samples. Sample material for the metallurgical testwork was obtained from the Company's auger drilling program, completed in May (see press release dated May 20, 2021). The sample material was composited by Activation Laboratories Ltd. before being sent off to Base Metallurgical Laboratories Ltd, both of Kamloops, British Columbia, for cyanide leach analysis. A total of six sample composites were sent for testing. Table 1 – Composite Make-up Comp1 Comp2 Comp3 Comp4 Comp5 Comp6 Drill Holes MAG-21-18 MAG-21-03 MAG-21-01 MAG-21-02 MAG-21-09 MAG-21-06 MAG-21-26 MAG-21-05 MAG-21-08 MAG-21-04 MAG-21-13 MAG-21-11 MAG-21-27 MAG-21-16 MAG-21-09 MAG-21-07 MAG-21-14 MAG-21-12 MAG-21-34 MAG-21-19 MAG-21-10 MAG-21-23 MAG-21-21 MAG-21-15 MAG-21-35 MAG-21-24 MAG-21-30 MAG-21-28 MAG-21-31 MAG-21-20 MAG-21-36 MAG-21-25 MAG-21-33 MAG-21-32 MAG-21-22 MAG-21-37 Each composite was made from material from a grouping of five to seven drill holes. Table 1 shows the drill holes used for each composite and Figure 1 shows the areas of the tailings basin covered by each composite. The six composites were assayed to determine head grade for gold, silver, and copper. Material from each composite was split off to test for gold recovery by cyanide leach at three different grind sizes. The first sample from each composite was leached on an as-received basis without any grinding, the second sample was leached after a 1-minute polish grind and the final leach test was with a target P80 grind size of 75µm. Leach testing on material with a target size of 75µm was not undertaken for Composites 3 and 5 as material from those composites reached the target size after the 1-m...