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Aztec Minerals Reports Positive Metallurgical Results from Cervantes Drill Core
VANCOUVER, BC / ACCESSWIRE / March 12, 2019 / Aztec Minerals Corp. (AZT: TSX-V, OTCQB: AZZTF)...
About this update from Aztec Minerals Corp.
[{"type":"text","content":"Aztec Minerals Reports Positive Metallurgical Results from Cervantes Drill CoreVANCOUVER, BC / ACCESSWIRE / March 12, 2019 / Aztec Minerals Corp. (AZT: TSX-V, OTCQB: AZZTF) reports positive bottle roll gold recoveries from metallurgical test-work conducted by Bureau Veritas on the California porphyry gold-copper drill core from the Cervantes property in Sonora, Mexico.Drill core samples were grouped into 4 separate types of mineralization (domains), Oxide 1, Oxide 2, Mixed Oxide/Sulfide and Sulfide. Highlights of the bottle roll gold recovery results are as follows: 85.1% recovery on 2.0mm material and 94.3% on 75 micron material in sample Oxide 1 87.7% recovery on 2.0mm material and 94.2% on 75 micron material in sample Oxide 2 77.9% recovery on 2.0mm material and 89.0% on 75 micron material in sample Mixed Oxide/Sulphide 51.2% recovery on 2.0mm material and 78.7% on 75 micron material in sample Sulphide\"We are pleased to report these very positive early stage metallurgical tests which indicate that the California oxide, mixed oxide/sulfide, and sulfide gold zones should be amenable to cyanide heap leach or agitated leach processing methods. More detailed test-work is needed to draw any definitive conclusions but these results are a great start\", commented Joey Wilkins, President and CEO. The 4 domains were defined by mineralization type, gold grade, and depths to fit the possibility of a future open pit mining scenario. Testing was conducted for 240 hours, although good recoveries generally plateaued at 48 hours, and the tests showed low cyanide and lime consumption. Table 1 outlines the domain information breakdown of the crushed, 2.0mm drill core residual crushed samples: Table 1. Bottle Roll Cyanide Leach Results, 2.0mm crush Domain Holes Intervals, in meters Int_m # of samples Head grade Au in ppm % Au recovery Head grade Ag in ppm % Ag recovery Oxide 1 17CER003 18CER006 18CER007 0.0—93.5 0.0—56.0 0.0—70.0 93.5 56.0 70.0 109 0.58 85.1 2.1 48.3 Oxide 2 17CER005 18CER014 0.0—34.0 0.0—49.0 34.0 49.0 33 0.45 87.7 1.6 47.3 Mixed Oxide/ Sulphide 17CER005 17CER005 18CER006 18CER007 86.0-110.0 120.0—139.0 56.0—154.0 70.0—98.0 24.0 19.0 98.0 28.0 84 0.52 77.9 2.5 46.7 Sulphide 18CER010 18CER011 18CER014 130.0—160.0 92.5—156.0 70.5—98.5 30.0 63.5 28.0 60 ...