Studies of hydrothermal gold deposition - (pt.) 1, carlin gold deposit, nevada, the role of carbonaceous materials in gold deposition

Stratigraphy, petrology, and some fossil data of the Roberts Mountains Formation, north-central Nevada

“…The occurrence of gold and geochemical halo at the Carlin deposit is described by Hausen (1967), Hausen and Kerr (1968), Akright, Radtke, and Grimes (1969), Radtke and Scheiner (1970), and Wells and Mullens (1973). These features have been studied at the Cortez deposit by Wells, Stoiser, and Elliott (1969), Wells and Elliott (1971), Wells and Mullens (1973), and Erickson and others (1966).…”

“…The major part of the ore at both mines occurs in the upper and more silty part of the laminated limestone. Radtke and Scheiner (1970) postulated that the gold at the Carlin mine occurred as a carbon complex. Microprobe study of unoxidized gold ore from both the Carlin and Cortez deposits, however, indicates that most of the gold and arsenic occures in tiny (< 0.005 mm) grains of pyrite and in the rims of larger grains of pyrite disseminated in the ore (Wells and Mullens, 1973).…”

Geology of the Carlin gold deposit, Nevada

“…Excellent descriptions of many geologic and mineralogic features of the upper, near-surface parts of the Carlin gold deposit were given by Hausen (1967) and Hausen and Kerr (1968). Prelimi nary results of laboratory and field studies on deeper pri mary unoxidized ores and host rocks in the deposit were reported by Radtke and Scheiner (1970b). Roberts and others, (1971) summarized a large amount of data on all types of gold deposits in Nevada.…”

“…� � GEOLOGY 15 Roen (1961) described the Roberts Mountains Forma tion in the Lynn window. Radtke and Scheiner (1970b) presented chemical and mineralogic data on the forma tion; Merriam and McKee (1976) summarized information on its stratigraphy, depositional facies, and stratigraphic paleontology; and Mullens (1980) made a comprehensive study of its petrology and stratigraphy, including the sec tion exposed in the Lynn window.…”

Journal of Research of the U. S. Geological Survey, 1973, volume 1, issue 1

“…Orpiment, AsiSa, has been recognized in several disseminated replacement-type gold deposits in the Western United States. These include the Getchell deposit in Nevada (Joralemon, 1951;Weissberg, 1965), the White Caps deposit at Manhattan, Nev. (Ferguson, 1924), the Carlin deposit in Nevada (Radtke and Scheiner, 1970), and the Mercur deposit in Utah (Gilluly, 1932). Deposits of this general type are usually in limestones from which significant amounts of carbonate have been removed and silica added.…”