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Geology and mineralization of the southeastern Gillis Range, Mineral County, Nevada
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Mackay614_SmithM.pdf
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Date
1981Type
ThesisDepartment
Geological Sciences and Engineering
Degree Level
Master's Degree
Degree Name
Geology
Abstract
Geological studies in the eastern part of the Fitting District, which is located in the southern Gillis Range, Mineral County, Nevada, revealed the presence of Upper Triassic Luning Formation sediments, Jurassic Dunlap Formation sediments (which are thrust upon Luning Formation rocks), Cretaceous dioritic to granitic rocks, and assorted Cenozoic volcanic and sedimentary rocks. Several types of mineralization were observed, including significant skarn deposits, and minor quartz-sulphide veins and thorium/uranium-bearing pegmatite-like occurrences. Tungsten- and copper-bearing bedding-controlled skarn veins occur at the White Hills claims. The tungsten skarns replace potassically altered andesitic tuffs; up to two discontinuous meta- somatic zones are present: an early formed scapolite zone and a later grandite (Ad10_25) zone. Tungsten mineralization is confined to the grandite zone. The copper-bearing skarn veins replace calc-silicate hornfels; up to four metasomatic zones are present: the later-formed zones contain more andraditic grandite and more diopsidic pyroxene than early-formed zones.
Description
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Permanent link
http://hdl.handle.net/11714/1712Subject
Fitting DistrictGillis Range
Mineral County
Nevada
Upper Triassic Luning Formation sediments
Jurassic Dunlap Formation sediments
Luning Formation rocks
Cretaceous dioritic
granitic rocks
Cenozoic volcanic rocks
sedimentary rocks
mineralizations
skarn deposits
minor quartz-sulphide veins
thorium/uranium-bearing pegmatite-like occurrences
tungsten skarns
copper-bearing skarn vein
andesitic tuffs
discontinuous meta-somatic zones
scapolite zones
grandite zones
copper-bearing skarn veins
metasomatic zones
andraditic grandite
diopsidic pyroxene
Mackay Science Project
Additional Information
Committee Member | Larson, L. T. |
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Rights | In Copyright(All Rights Reserved) |
Rights Holder | Author(s) |