Solo-Oro Grande Mine | |
Gold was produced on a small scale at this property during 1932-34 and again from 1938 to 1940. Hoisting was from 2 shafts which were connected underground. The deeper of these reached 160m below the surface. Mineralization occurs in rather weak and discontinous systems of quartz stringers and lenses in shear zones which cut a mafic sill. The ore mineralogy is pyrite, chacopyrite, pyrrhotite, sphalerite and gold. Gold occurs erratically, often in the free state. Wall rock alteration is principally quartz-carbonate-chlorite-pyrite, with biotite and specular hematite. Tons Milled - 16,628 tons Gold Recovered - 5,451 oz. Silver Recovered - 525 oz. Average Grade - 0.33 oz./ton Years Worked - 1932-40
|
|