Results 351 to 360 of about 2,300,160 (396)
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1999
Abstract Epithermal ore deposits form in the shallow portions of hydrothermal systems, from the surface to less than about 1-km depth. The hydrothermal activity is associated with contemporaneous volcanism and related magma intrusions, and the ore is hosted typically by volcanic rocks.
Jeffrey W. Hedenquist, Antonio Arribas
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Abstract Epithermal ore deposits form in the shallow portions of hydrothermal systems, from the surface to less than about 1-km depth. The hydrothermal activity is associated with contemporaneous volcanism and related magma intrusions, and the ore is hosted typically by volcanic rocks.
Jeffrey W. Hedenquist, Antonio Arribas
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1989
Abstract When the price of gold rose from about $200 (U.S.) an ounce in 1979 to nearly $700 an ounce by the end of the same year, the gold rush of the 1980s was under way. Gold production in the western world rose dramatically; from 1981 to 1986 production increased by 300 to 1,282 metric tons per year.
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Abstract When the price of gold rose from about $200 (U.S.) an ounce in 1979 to nearly $700 an ounce by the end of the same year, the gold rush of the 1980s was under way. Gold production in the western world rose dramatically; from 1981 to 1986 production increased by 300 to 1,282 metric tons per year.
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1993
The primary role of gold mining in the economy is wealth creation. Wealth is generated by finding, delineating, and developing economic gold deposits and, then, mining, recovering and selling gold from them. Thus, economic deposits are the focal point of the gold-supply process.
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The primary role of gold mining in the economy is wealth creation. Wealth is generated by finding, delineating, and developing economic gold deposits and, then, mining, recovering and selling gold from them. Thus, economic deposits are the focal point of the gold-supply process.
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2017
<div class="section abstract"> <div class="htmlview paragraph">This SAE Standard specifies the requirements for the electro-deposition of gold on ferrous-base materials, copper-base materials, aluminum-base materials, zinc-base materials and nickel-base materials for MOD use.
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<div class="section abstract"> <div class="htmlview paragraph">This SAE Standard specifies the requirements for the electro-deposition of gold on ferrous-base materials, copper-base materials, aluminum-base materials, zinc-base materials and nickel-base materials for MOD use.
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A holistic model for the origin of orogenic gold deposits and its implications for exploration
Mineralium Deposita, 2019D. Groves +5 more
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2018
<div class="section abstract"> <div class="htmlview paragraph">This SAE Standard specifies the requirements for the electro-deposition of gold on ferrous-base materials, copper-base materials, aluminum-base materials, zinc-base materials and nickel-base materials for MOD use.
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<div class="section abstract"> <div class="htmlview paragraph">This SAE Standard specifies the requirements for the electro-deposition of gold on ferrous-base materials, copper-base materials, aluminum-base materials, zinc-base materials and nickel-base materials for MOD use.
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Chemical composition of tourmaline in orogenic gold deposits
Mineralium Deposita, 2020Marjorie Sciuba +2 more
semanticscholar +1 more source
1995
The more than thousand gold mineralizations in Europe indicate, that gold had been potentially available to the prehistoric societies of Europe from many different mining districts scattered over whole Europe. Gold mining in Europe started in the Neolithic times and reached a first maximum of production during the Roman empire, mainly on the Iberian ...
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The more than thousand gold mineralizations in Europe indicate, that gold had been potentially available to the prehistoric societies of Europe from many different mining districts scattered over whole Europe. Gold mining in Europe started in the Neolithic times and reached a first maximum of production during the Roman empire, mainly on the Iberian ...
openaire +1 more source