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.

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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

 

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