Geology of the carbonate-hosted Omar copper prospect, Baird Mountains, Alaska

Folger, Peter; Schmidt, J. W.

doi:10.2113/gsecongeo.81.7.1690

Cited by 6 publications

(3 citation statements)

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“…Few minor isoclinal folds. Degenhart and others, 1978;Mayfield and others, 1983;Inyo F. Ellersieck, written commun., 1985;Folger and Schmidt, 1986 Q04-02 Frost Cu, Zn, Pb, barite Estimated to contain 0.9 million tonnes 67«28'N Northwestern BrooKs Range Cu-Zn-Pb-Ba vein S^IK^Szn 161 e35'W 0.5% Cu. and 21% barite Chalcopyrite and galena in undulating quartz-calcite-barite veins, and lenses and pods of barite at least 30 m long by 10m thick.…”

Section: Au Quartz Veinmentioning

confidence: 99%

Significant metalliferous and selected non-metalliferous lode deposits and placer districts for the Russian Far East, Alaska, and the Canadian Cordillera

Nokleberg¹,

Bundtzen²,

Dawson³

et al. 1996

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This report is a written tabular compilation of the significant metalliferous and selected non-metalliferous lode deposits and placer districts of the Russian Far East, Alaska, and the Canadian Cordillera. The report provides detailed summaries of the important features of the significant lode deposits and placer districts along with a summary of mineral deposit models, and a bibliography of cited references. Data are provided for 1,079 significant lode deposits and 158 significant placer districts of the region. This version of the report is issued on standard paper

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Section: Au Quartz Veinmentioning

confidence: 99%

Significant metalliferous and selected non-metalliferous lode deposits and placer districts for the Russian Far East, Alaska, and the Canadian Cordillera

Nokleberg¹,

Bundtzen²,

Dawson³

et al. 1996

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“…Insufficient data preclude assignment of these deposits to a specific mineral deposit type. The Omar deposit (Table 1) consists of disseminated to massive chalcopyrite and other sulfides in veinlets, stringers, and blebs in brecciated Ordovician to Devonian dolomite and limestone of the Baird Group (Folger and Schmidt, 1986), and it is classified as a Kipushi Cu-Pb-Zn deposit ( Table 1). The Endicott Group which hosts the Story Creek and Whoopee Creek deposits, forms part of the Brooks Range allochton (Mayfield and others, 1983) and is part of the Endicott Mountains subterrane (Plate 1).…”

Section: Sulfide Vein Deposits Northwestern Brooks Rangementioning

confidence: 99%

Metallogeny and major mineral deposits of Alaska

Nokleberg¹,

Bundtzen²,

Berg³

et al. 1988

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This report is a preliminary version of a chapter for the volume on Alaskan geology for the Decade of North American Geology (DNAG) by the Geological Society of America. This report is based on recent unpublished data on metalliferous mineral deposits of Alaska, and on recent and older published articles and summaries of Alaskan mineral deposits and regional geology. The unpublished data were contributed by mineral deposit and regional geologists in private industry, universities, the U.S. Geological Survey, the Alaska Division of Geological and Geophysical Surveys, the U.S. Bureau of Mines, and the authors. Data were also obtained for classification of metalliferous mineral deposits from mineral deposit geologists in the U.S. Geological Survey. The 54 contributors who gave freely of their data, with affiliations at the time of contribution, are: PREVIOUS STUDIES Since 1964, several statewide and regional summaries of Alaskan metalliferous lode and placer deposits have been published by the U.S. Geological Survey (USGS), and the Alaska Division of Geological and Geophysical Surveys (ADGGS). In 1964, the USGS published a map of placer gold occurrences in Alaska (Cobb, 1964); subsequently, they published a statewide summary of metalliferous lode deposits (Berg and Cobb, 1967) and a summary of Alaskan placer deposits (Cobb, 1973). In 1976 and 1977, the USGS published a series of regional tables, maps, and references for metalliferous deposits. These regional reports cover the Brooks Range (Grybeck, 1977), the Seward Peninsula (Hudson and others, 1977), central Alaska (Eberleln and others, 1977), and southern Alaska (MacKevett and Holloway, 1977a, b). In 1981, the USGS published a report on all known mines, prospects, deposits, and occurrences in southeastern Alaska (Berg and others, 1981), and in 1982 a series of regional mineral-terrane maps of Alaska, prepared by C.C. Hawley and Associates, showing the location, size, and type of major metalliferous mineral deposits, was published by the Arctic Environmental Information and Data Center (AEIDC, 1982). In 1981 and 1984, the USGS published reports summarizing the regional geology, metallogenesis, and mineral resources of southeastern Alaska (Berg and others, 1981; Berg, 1984). In recent years, a yearly listing of Alaskan lode and placer deposits has been published by the Alaska Division of Geological and Geophysical Surveys; the listing for 1985 is by Bundtzen and others (1986). CLASSIFICATION OF MINERAL DEPOSITS Metalliferous deposits discussed in this report are classified into 29 lode deposit and 4 placer deposit models or types, listed below and described in Appendix 1. For simplicity, some types are grouped under one heading. This classification was derived mainly from the mineral-deposit models developed by Erickson (1982), Cox (1983a, b), Cox and Singer (1986), and other works listed in Appendix 1. Of the 29 types of lode and placer deposits, four were newly formulated for this study: metamorphosed sulfide, Cu-Ag quartz vein, and felsic-plutonic U lode deposit...

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“…Gold production, where known, is stated in grams (g). Production figures are from Cobb (1973) and Robinson and Bundtzen (1980 Roeder and Mull, 1978;Degenhart and others, 1978;Zimmerman and Soustek, 1979;Mayfield and others, 1983;Foley and others, 1985, in Roeder and Mu 11, 1978;Degenhart and others, 1978;Zimmerman and Soustek, 1979;Foley and others, 1985, in Wiltse, 1975;Sichermann and others, 1976;Hitzman and others, 1982;Schmidt, 1983;Jeanine Schmidt, written commun., 1984;Schmidt, 1986 schist, part of the Ambler sequence. Strike length of 2,000 m; average width of 1.5 m. Layering strikes east-west and dips 5cP to 7cP south.…”

Section: Placer Districtsmentioning

confidence: 99%