Prince mine, Pioche Mining District, Lincoln County, Nevada, USAi

Regional Level Types
Prince mine	Mine
Pioche Mining District	Mining District
Lincoln County	County
Nevada	State
USA	Country

Sec 33 T1N R67E

Structure: Numerous Faults , With Some Post-Ore Faulting Which Step-Faults The Ore., With Some Post-Ore Faulting Which Step-Faults The Ore.

Deposit type: Polymetallic replacement

Development: 4 patented claims, 1 patented fraction, and 14 unpatented claims all covering 386 acres. The prince mine was dewatered shortly after construction of the caselton mill, and commenced sulfide ore production from the 835-ft or bottom level. Depletion of sulfide ore reserves caused the mine to close prior to 1951. In early years, the ore was in demand As a fluxing ore because of its high Fe-mn content. Prince consolidated mining co was formed in 1907 by j. L. Hackett of kentucky and the godbe brothers of salt lake city, who later built a railroad from pioche to the prince mine (1912). From 1912 to 1921 large ore bins were built and a large orebody was developed. First mining was done by caving but a shrinkage system was later adopted. Most shallow bedded ore came from the "big bed" and the "twenty-foot bed". By 1920 most of these orebodies were exhausted and most output came from the davidson orebody, taken over in 1918. The mine was in financial trouble 1920-1923 when the company was taken over by the owners of the adjacent virginia louise mine, and the workings on the prince 835 level were extended, after which the "sulphide ore body" and the "silver bed" were developed and mined until 1926.

Geology: Ore deposits are irregular replacement bodies in flayers in stratigraphic interval of over 1,200 feet. They are oxidized manganiferous fluxing ores. High grade pb-ag ore was mined from 2 quartz veins and an irregular siliceous replacement body. At the pioche shale/prospect mtn quartzite contact there is a siliceous ore with 10% zn. Two fissure veins containing siliceous ore present underground in the prince mine, roughly parallel, ore vein completely oxidized, the other carries some sulfide ore. Ore in these fissures is erratic in distribution. Vein with sulfide ore carries 10-25% pb, 35 oz ag. Deepest workings on the fissure veins are oxidized, contains spotty metal content, in places up to 100 oz ag/ton. Host rocks striking n-s, dipping 15e.

Rock formation(s): Pioche Shale;Peasley Member Of Highland Peak, Lyndon Limestone;Peasley Member Of Highland Peak, Lyndon Limestone;Prospect Mountain Quartzite


Ore(s): Along Bedding Surfaces, Along Fractures And Shears Where They Intersect The Favorable Host Rock.

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Link to USGS MRDS:	10008111

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References