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Browsing by Subject "petrography"
Now showing items 1-12 of 12
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A study of the Lake Lahontan sediments in the Winnemucca area, Nevada
(University of Nevada, Reno, 1961)The petrography of Lake Lahontan and fan sediments was compared, and a possible means for distinguishing between the two types of sediments is suggested. -
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Geology and mineralization of the willard mining district, Pershing County, Nevada
(University of Nevada, Reno, 1980)The geology and mineralization of the Willard Mining District, located in Pershing County, Nevada, have been studied. Soil and rock chip sampling have defined two gold-arsenic anomalies. Gold and silver of the district are ... -
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Geology of some bedded barite deposits, north central Nevada
(University of Nevada, Reno, 1977)The geology of two bedded barite deposits, located in the Northern Shoshone Range of Nevada, has been studied. The study included geologic mapping, a petrographic study of ore and host material, and geochemical analysis ... -
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Geology of the Corral Canyon area, Churchill County, Nevada
(University of Nevada, Reno, 1955)The geology and mineralization of Corral Canyon were studied. Low-grade titanium deposits occur in dikes which cut diorite. Alteration of the diorite and dikes is extensive. Gold was deposited in some dikes. -
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Geology of the lower Grider Creek-Grider Ridge area, Siskiyou County, California
(University of Nevada, Reno, 1983)The Lower Grider Creek-Grider Ridge area is composed of a structurally complex sequence of ultramafics, greenschist and amphibolite facies metasediments and metavolcanics, and trondhjemitic quartz diorite intrusives. -
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Order-disorder in coexisting plagioclase and alkali feldspar from the Mineral Range of southwest Utah
(University of Nevada, Reno, 1968)Estimates of degree of order were made on 30 chemically analyzed pairs of coexisting alkali and plagioclase feldspars sampled transverse to the granitic Mineral Range pluton of southwest Utah. -
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Petrography, alteration, and mineralization of igneous dikes of the Jerritt Canyon District, Elko County, Nevada
(University of Nevada, Reno, 1994)The petrography, alteration, and mineralization of igneous dikes of the Jerritt Canyon District have been studied. Four types of igneous dikes intrude the sedimentary rocks and two are locally gold ore. The oldest and most ... -
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Petrology of the Ryan Canyon Stock, Mineral County, Nevada
(University of Nevada, Reno, 1974)The petrology of the Ryan Canyon stock has been studied. The stock is a small quartz monzonite porphyry intrusion. Alteration and metamorphism of the area is described. -
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Potential concrete aggregate reactivity in Northwestern Nevada
(University of Nevada, Reno, 2004)Laboratory testing and petrography indicate that a relatively high potential for Alkali-Silica reactivity exists in several aggregates in northwestern Nevada. -
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The geology and mineralization of the Grayback Mountains, Yavapai County, Arizona
(University of Nevada, Reno, 1992)The geology and mineralization of the Grayback Mountains were studied. Extrusive and intrusive rocks exposed in the study area document magmatic activity and evolution from the late Cretaceous through the early Tertiary. ... -
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The Paleozoic-Mesozoic uncomformity of the northern Sierra Nevada, California, and its significance
(University of Nevada, Reno, 1990)Research concludes that the Paleozoic-Mesozoic unconformity of the northern Sierra Nevada exists and is traceable north of the North Fork American River, and is likely part of the unconformity related to the Permo-Triassic ... -
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The petrography and petrology of a portion of the northern Cedar Mountains, Mineral County, Nevada
(University of Nevada, Reno, 1983)A combined field and petrographic study describes the spatial mineralogical and textural characteristics of the Cedar Pass pluton and related volcanic rocks. Correlation between mantled feldspars, basic inclusions and ...