 | | Report (issue) | | Gold Deposits of the Carolina Slate Belt, Southeastern United States: Age and Origin of the Major Gold..., and Ayuso, R.A., 2012, Gold deposits of the Carolina Slate Belt, southeastern United States—Age and...18. Historic open pit of the Haile Gold Mine, South Carolina ........................................... 4 The regional distribution of rocks in the Carolina and Avalonian tectonic zones.................................. 6 Terrane distributions in the Carolina zone ........................................ |  | | Journal (article/letter/editorial) | | pyrite, as well as associated with barite, iron oxyhydroxides and covellite as boxwork fillings. Primary electrum...collected from surface exposures and underground mine levels. The mineralogy was determined from polished...observed in the mineralized bodies cut by underground mine galleries (500, 550, 600, 650, and 690 m.a.s.l.)...association of acanthite and/or aguilarite with covellite is very common. Pyrite crystals display partial...acanthite and/or aguilarite, iron oxyhydroxides, barite, covellite, and cuprite. These minerals coexist with |  | Juliani, Caetano, Rye, Robert O., Nunes, Carmen M.D., Snee, Lawrence W., Corrêa Silva, Rafael H., Monteiro, Lena V.S., Bettencourt, Jorge S., Neumann, Rainer, Neto, Arnaldo Alcover (2005) Paleoproterozoic high-sulfidation mineralization in the Tapajós gold province, Amazonian Craton, Brazil: geology, mineralogy, alunite argon age, and stable-isotope constraints. Chemical Geology, 215 (1) 95-125 doi:10.1016/j.chemgeo.2004.06.035 | Journal (article/letter/editorial) | | Denver Federal Center, Denver, Colorado 80225, USA c Centro de Tecnologia Mineral, Rio de Janeiro, Rio...enargite–luzonite, chalcopyrite, bornite, and covellite. The siliceous core of this alteration center...sericitic. Gold, as well as enargite–luzonite and covellite, is associated with these altered rocks. Silicified...(Fig. 9c,d), as well as chalcopyrite, bornite, covellite, and small grains of native copper and silver...pyrophyllitic matrix and as fine inclusions in covellite. The Au contents in silica zones are up to 4.5 |  | | Report (volume) | | ·eochemicaf, Anomalies Mineral Belts in Western Sierra County, New Mexico, Suggested by Mining Districts, Geology...information on mineral belts in western Sierra County, New Mexico, indicates many new areas favorable...(Tom Gray), 1921Mineral belts in western Sierra County, New Mexico, suggested by mining districts, geology...resources-New Mexico-Sierra County. 2. Geology-New Mexico-Sierra County. I. Heyl, Allen Van, 1918- II...Kingston district, including North Percha Creek and South Percha Creek 15 areas Location 15 Production 15 |  | | Report (issue) | | SURVEY CIRCULAR 1062 .r • San jose tin~silver mine at Oruro, Bolivia, where high-grade ores are hosted...setting of gold deposits in the Carolina slate belt of North Carolina - Terry W. Offield and Terry L....Platinum-group-mineral investigations , East and South Kalimantan, Indonesia- Michael L. Zientek and Bambang...gold in stream sediments of east-central Lemhi County, Idaho - by George A. Desborough, William H. Raymond...Kelley Creek valley, Getchell gold trend, Humboldt County, Nevada- by D.E. Detra, S.M. Smith, P.K. Theobald |  | | Report (issue) | | niobium in Brazil; and platinum-group elements in South Africa and Russia), thus increasing the risk for...national security of the United States: antimony (Sb), barite (barium, Ba), beryllium (Be), cobalt (Co), fluorite................................... C1 Chapter D. Barite (Barium) By Craig A. Johnson, Nadine M. Piatak....B3 Graph showing dates associated with all the mine sites on the U.S. Environmental Protection Agency’s...production, U.S. apparent consumption, and U.S. mine production of antimony from 1900 to 2012....... |  | | Report (volume) | | have also been a minor source of aluminum metal. Barite is used extensively in the petroleum industry as...and sediment. Concentrated waters associated with mine wastes may precipitate a variety of metal-sulfate...role of soluble sulfate minerals formed from acid mine drainage (and its natural equivalent, acid rock...next three chapters, on evaporites (Chapter 3). barite-celestine deposits (Chapter 4), and the kinetics...kinetics of precipitation and dissolution of gypsum, barite, and celestine (Chapter 5). Acidic environments |  | | Report (volume) | | the resulting Acid Rock Drainage (ARD), or Acid Mine Drainage (AMD) where the sulfides are the waste...Elsevier Stanton RL (1972) Ore Petrology. McGraw Hill Trindade T, O’Brien P, Pickett NL (2001) Nanocrystalline...-mackinawite, its intercalates and derivatives -covellite merotypes -valleriite Sesquichalcogenides Dichalcogenides...well. Examples are the hutchinsonite merotypes, covellite merotypes, and the complete series of layered...(Table 6). Other M:S=1:1 layer types Covellite merotypes. Covellite, CuS, is a sulfide with a layer structure |
|
