Geology and mineral deposits of the northern half of the Mt. Tobin mining district, Pershing County, Nevada
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Authors
Perry, Richard M.
Issue Date
1985
Type
Thesis
Language
en_US
Keywords
Mt. Tobin Mining District , Winnemucca , Tobin Range , Mercury , Minor Silver And Gold From Deposits , Tertiary Volcano-tectonic Graben , Paleozoic Havallah Sequence , Triassic Sediments , Tertiary Volcanics , Tertiary Epithermal Mercury—gold-silver Mineralization , Graben-bounding Fault , Hot Spring Deposits , Mackay Theses and Dissertations Grant Collection
Alternative Title
Abstract
The Northern half of the Mt. Tobin Mining District, 45 miles south of Winnemucca in the Tobin Range, produced 1073 flasks of mercury and minor silver and gold from deposits located near the northern margin of a late Tertiary vo1cano-tectonic graben. This graben is bounded to the north by a fault which juxtaposes complexly deformed sediments of the late Paleozoic Havallah sequence with Triassic sediments and Tertiary volcanics which fill the graben. Two types of mineralization are present; (1) Tertiary epithermal mercury—gold-silver mineralization which is structurally controlled by the graben-bounding fault and (2) stratiform volcanogenic silver mineralization in the Havallah sequence. Analyses of 171 samples of Tertiary mineralized rocks indicate a vertical zoning of gold, silver, arsenic, antimony and mercury in vein and fossil hot springs deposits.
Description
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Citation
Publisher
University of Nevada, Reno
License
In Copyright(All Rights Reserved)