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Tin Deposit at Majuba Hill Pershing County, Nevada

Description: Abstract: The tin and copper deposits at Majuba Hill, Pershing County, Nevada are in a partly brecciated plug of Tertiary rhyolite porphyry, which is altered nearly everywhere to quartz and sericite and in some places is intensely tourmalinized. The tin mineral, cassiterite, appears to be associated with the alteration, for the single concentration of it was formed by replacement of altered breccia. Brecciated and altered rock is, however, only a general guide to potentially tin-bearing ground,… more
Date: 1942
Creator: Smith, Ward C. & Gianella, V. P.
Item Type: Refine your search to only Report
open access

Tungsten Deposits of the Nightingale District, Pershing County, Nevada

Description: Abstract: The tungsten deposits of the Nightingale district are just within the western border of Pershing County, Nev., and in the Nightingale or Truckee Range, which lies east of Winnemucca Lake. The Tertiary volcanic rocks of the district rest unconformably upon intrusive granodiorite and steeply dipping metamorphosed limestones and slates of unknown age. The tungsten deposits are of the contact-metamorphic type: The ore consists of scheelite bearing tactite, a dark silicate rock that was fo… more
Date: 1942
Creator: Smith, Ward C. & Guild, Philip White
Item Type: Refine your search to only Report
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