![]() |
|
Mines Menu:
Mines Map
Use the links at the left to return.
|
|
Mine Descriptions |
|
Mansfield Mine group | |
Wrightson Mining district Alternate NamesSweet, Black Cap, Ruby, Rupert, Lee. CompanyMansfield & Ryan, Gunsight Mg. Co., Powers, Mansfiled Mg. & Smltg. Co., Pierce, Laycock. Bradsher. Location? Mineral ProductsPb, Ag, Cu, Zn, Au Type of OperationsTunnel and shaft operations. Worked intermittently from 1879 through 1951, producting some 370 tons of ore averaging about 19% Pb, 22 oz. Ag/T, 2% Cu and 0.1 oz. Au/T.5 GeologyCluster of roughly parallel quartz-fissure veins containing pyrite, argentiferous galena, sphalerite, tetrahedite, chalcopyrite, bornite, in a quartz, calcite, barite and manganese gangue. Wall rocks are strongly altered Triassic dacitic and latitic flows and Cretaeous andesite breccia intruded by Laramide quartz latite dikes, stocks, sills, and breccia.5
|