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Jarilla mine | |
OwnershipBullion, Stockton, Ish, Gusteller & Curtis, Las Jarillas Mg. Co., Gross5 Location31.4732,-110.7879; 31.4839 N, 110.7633 W3 23S 15E Cen. SE¼ 95 Mineral ProductsAg, Pb, Au-, Cu-, Mo-, Mn-5 GeologyLensing fissure veins with well banded quartz, argentiferous galena, and minor chalcopyrite that has been crushed. Gouge borders. Few pockets of wulfenite. Oxidized at the surface to drusy quartz, psilomelane, lead and copper carbonates, and pockets of horn silver. Lead mineralization increased with depth. Deposit lies along a fault zone parallel to a contact of Jurassic granite with Precambian metamorphics.5 Type of OperationShaft operations. Mined by Mexicans prior to 1880 and sporadically to 1924. Estimated and recorded production would be some 100 tons of ore averaging about 190oz. Ag/T, 37% lead, 0.1 oz. Au/T and minor Cu5. References
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