Results 41 to 50 of about 91 (71)
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Mapping of jasperoid in the Cedar Mountains, Utah, USA, using imaging spectrometer data
International Journal of Rock Mechanics and Mining Sciences, 1996exaly +2 more sources
Geology and geochemistry of jasperoids from the Gold Bar district, Nevada
Mineralium Deposita, 2006Gold Bar is one of several Carlin-type gold mining districts located in the Battle Mountain–Eureka trend, Nevada. It is composed of one main deposit, Gold Bar; five satellite deposits; and four resources that contain 1.6 Moz (50 t) of gold. All of the deposits and resources occur at the intersection of north-northwest- and northeast-trending high-angle
Yigit, Ozcan +3 more
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The origin of jasperoid in limestone
Economic Geology, 1962The name jasperoid has been applied to rocks that consist mainly of silica and that have formed by replacement. This paper considers only those jasperoids formed by replacement of limestone. Major problems involved in the origin of such jasperoid include: source of the silica; nature of solutions that dissolve, transport, and precipitate silica; and ...
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MERCURY-ANTIMONY ORE FORMATION OF JASPEROID-TYPE DEPOSITS IN CENTRAL ASIA
Russian Geology and Geophysics, 1991A mercury-antimony ore formation has been recognized and characterized as a result of persistent and purposeful investigations of the jasperoid type of mineralization, which is typical of the Central-Asian mercury-antimony province. Research into conditions of localization of mineralization, its mineralogo-geochemical, genetic features and practical ...
R. R. Isanov, O. V. Korsak
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Geological Magazine, 2023
AbstractDetailed characterization was performed on the chalcedonies from the jasperoids of the Pietratonda–Poggio Peloso Sb–Au deposit (southern Tuscany, Italy). The main purpose was to retrieve information on the geothermal fluids that formed the chalcedonies and the source of antimony concentrations.
Gliozzo E.[1] +5 more
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AbstractDetailed characterization was performed on the chalcedonies from the jasperoids of the Pietratonda–Poggio Peloso Sb–Au deposit (southern Tuscany, Italy). The main purpose was to retrieve information on the geothermal fluids that formed the chalcedonies and the source of antimony concentrations.
Gliozzo E.[1] +5 more
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Geochemistry and geology of gold in jasperoid, Elephant Head area, Lander County, Nevada
1992exaly +2 more sources
Dolomite and jasperoid in the Metaline District, northeastern Washington
Economic Geology, 1938The replacement ore bodies of the Metaline zinc-lead district, in northeastern Washington are limited to the greatly disturbed fault block through which the Pend Oreille River flows and are associated with the major faults but are not in them. They are mostly near the top of the Metaline limestone, of Middle Cambrian age, and below black Ordovician ...
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Stable isotope investigation of gold-bearing jasperoid in the central Drum Mountains, Utah
Economic Geology, 1979The oxygen, hydrogen, carbon, and sulfur isotope relationships in gold-bearing jasperoid and associated carbonate and pyrite from the Drum Mountains, Utah, have been studied for the purpose of determining certain genetic relationships of these mineral occurrences.
J. R. O'Neil, G. B. Bailey
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Paragenesis of the Tri-State jasperoid [Missouri-Kansas-Oklahoma]
Economic Geology, 1951The characteristic gangue of the zinc ores of the Tri-State district and northern Arkansas, locally termed jasperoid, is believed by some geologists to be older than the sulphides and to have been extensively replaced by them. Others believe there has been no replacement of the jasperoid and that jasperoid and sulphides were deposited contemporaneously.
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