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Date : 2011-12-27
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Placer Gold Deposits of Nevada Original Geological Survey ~ This item Placer Gold Deposits of Nevada Original Geological Survey Bulletins by Maureen G Johnson Paperback 1195 Only 9 left in stock more on the way Ships from and sold by FREE Shipping on orders over 25 Details Placer Gold Deposits of Arizona by Maureen G Johnson Paperback 1195
Deposits Gold Placer r t Geological Survey ~ Placer Gold Deposits of Nevada By MAUREEN G JOHNSON GEOLOGICAL SURVEY BULLETIN 1356 A catalog of location geology and production with lists of annotated references pertaining to the placer districts UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON 1973 DEPARTMENT OF THE INTERIOR
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Placer mining in Nevada PHOTOCOPY ~ General topography and hydrography of Nevada history of placer mining production of placer gold geology of Nevada deposits mining methods and equipment includes detailed descriptions of placer gold districts in Nevada and a selected bibliography
Natomas Placer MRDS 10039043 AU AG USGS ~ deposit roberts and arnold dc 1965 ore deposits of the antler peak quadrangle humboldt and lander counties nevada geological survey professional
Placer gold deposits of Arizona AZGS Document Repository ~ Eightyseven placer districts in Arizona are estimated to have produced a minimum of 564052 ounces of placer gold from 1774 to 1968 The location areal extent past production mining history and probable lode source summarized for each district are based on information obtained from a wide variety of published reports relating to placer deposits
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Placer Gold Deposits of the Sierra Nevada Paul D ~ Placer Gold Deposits of the Sierra Nevada Paul D Morrison on FREE shipping on qualifying offers The history and geology of the Mother Lode Gold Country of California were well documented in numerous government mineral resource surveys throughout the century This book compiles data from those reports
Northern Nevada Placer Gold Districts and Prospecting areas ~ Nevada is well known for its hard rock gold mine production However Nevada ranks 6th among the 50 states in placer gold production with historic production of roughly 17 million ounces Most of this placer production occurred before 1900 but sporadic mining and prospecting work has continued ever since
Gold in placer deposits Geological Survey ~ Man most likely first obtained gold from placer deposits more than 6000 years ago Placers account for more than twothirds of the total world gold supply and roughly half of that mined in the States of California Alaska Montana and deposits result from weathering and release of gold from lode deposits transportation of the gold and concentration of the gold dominantly in
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