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cobaltiferous pyrite

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Journal Article
Published: 01 February 1968
American Mineralogist (1968) 53 (1-2): 293–295.
Journal Article
Journal: Economic Geology
Published: 01 November 1986
Economic Geology (1986) 81 (7): 1644–1674.
... of the system, pyrrhotite, chlorite, and barium silicates are present with the siderite-bearing assemblage. A zone of discontinuous massive to semimassive iron sulfide separates the siderite-bearing zone from overlying ferroan B dolostones. Late assemblages of massive pyrite, often cobaltiferous, with minor...
Journal Article
Journal: Geology
Published: 02 June 2023
Geology (2023) 51 (8): 773–778.
.... The Co-Fe and Co-As sulfide minerals are most suitable for Co and Ni recovery by a hydrometallurgical autoclave process, with potential pretreatment of cobaltiferous pyrite/arsenopyrite in an inert-atmosphere roaster, in new domestic or anticipated international facilities. The ICB is the second largest...
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Journal Article
Published: 01 February 1979
American Mineralogist (1979) 64 (1-2): 136–139.
...J. R. Craig; D. J. Vaughan Abstract Cattierite (CoS 2 ) specimens from the type locality contain disulfides deposited in the sequence pyrite (<0.9 percent Co) → cobaltiferous pyrite (15-20 percent Co) → cattierite (3.5-6 percent Fe and 2-8 percent Ni). Cattierite formation was accompanied...
Journal Article
Journal: Economic Geology
Published: 01 September 2012
Economic Geology (2012) 107 (6): 1089–1113.
... concentrations of cobaltite, chalcopyrite, gold, and xenotime; and (3) strata-bound magnetite-rich lenses in the Iron Creek area, which contain cobaltiferous pyrite and locally sparse chalcopyrite or xenotime. Most sulfide-rich deposits in the Blackbird district are enclosed by strata-bound lenses composed...
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Journal Article
Journal: Economic Geology
Published: 01 April 1985
Economic Geology (1985) 80 (2): 221–249.
.... This hydrothermal material consists mainly of ocherous Fe hydroxide (goethite) comprising about 62 percent of the bulk product recovered from the southeastern seamount; it overlies Fe-rich massive sulfide (24%), silica-rich sulfide (13%), and massive Fe-Cu sulfides (1%). Localized patches of cobaltiferous pyrite...
Image
Photomicrographs of mineralized samples in reflected light. (A) Coarse euhe...
Published: 01 September 2012
fragments) with disseminated cobaltite; tourmaline is dark gray; black specks are pits; Haynes-Stellite deposit, sample GH-BB-23. (F) Magnetite with cobaltiferous pyrite and minor quartz, Iron Creek area, sample GH-IC-03. Mineral abbreviations: Amp = am-phibole, Au = native gold, Bi = native bismuth, Bt
Image
Photographs of mineralized samples. (A) Lenses of granoblastic cobaltite fr...
Published: 01 September 2012
cobaltiferous pyrite from the No-Name deposit in the Iron Creek area, sample GH-IC-03; note that other magnetite-rich samples from this deposit lack sulfides ( Nash, 1989 , fig. 4F).
Image
F ig . 9. A. Photomicrograph of jacutinga, showing the
contact between the ...
Published: 01 January 2001
of magnetite (Mt) partially replaced by hematite II (HII) and Fe hydroxide (FeH). Note that some of the crystal planes are completely leached out forming a net texture (reflected light). C. Photomicrograph showing a close-up of (B) with remnants of magnetite (Mt) and a cubic inclusion of cobaltiferous pyrite
Journal Article
Journal: Economic Geology
Published: 01 November 1986
Economic Geology (1986) 81 (7): 1675–1689.
... increasingly replaced by Cu-bearing sulfides from the outer zone to the core. Some of this pyrite recrystallized into coarser grains having cobaltiferous rims, and these grains were generally not replaced. The sulfide minerals are commonly pseudomorphous after lath-shaped crystals within the dolomite clasts...
Journal Article
Journal: Economic Geology
Published: 01 January 2001
Economic Geology (2001) 96 (1): 61–74.
... of magnetite (Mt) partially replaced by hematite II (HII) and Fe hydroxide (FeH). Note that some of the crystal planes are completely leached out forming a net texture (reflected light). C. Photomicrograph showing a close-up of (B) with remnants of magnetite (Mt) and a cubic inclusion of cobaltiferous pyrite...
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Journal Article
Journal: Economic Geology
Published: 01 September 2012
Economic Geology (2012) 107 (6): 1115–1141.
... east and west of central zone Hanging wall: megacrysts + anastomosing veins; veinlet and fracture fill in and below lower sulfide zone(s) Ore mineralogy Chalcopyrite, rare Co-bearing phases Chalcopyrite, cobaltiferous py (?) Mineralization style Predominantly restricted to massive pyrite...
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Journal Article
Journal: Economic Geology
Published: 01 September 2012
Economic Geology (2012) 107 (6): 1081–1088.
... chalcopyrite and locally minor tennantite replace fine-grained pyrite, barite, and carbonate. Cobalt occurs in early framboidal, cobaltiferous pyrite. Mineralizing fluids apparently moved up the synsedimentary normal fault and vented onto the sea floor. Structural basins in the hanging wall of the basin...
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Journal Article
Journal: Economic Geology
Published: 01 December 2000
Economic Geology (2000) 95 (8): 1635–1656.
... and alteration assemblages apparently reflect this change in metamorphic grade: disseminated, stratiform, and veinlet mineralization of cobaltiferous pyrite, cobaltiferous arsenopyrite and chalcopyrite in quartzites, and ankeritic carbonate-bearing phyllites at Iron Creek and Blackpine; stratiform and vein...
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Journal Article
Journal: Economic Geology
Published: 01 September 2012
Economic Geology (2012) 107 (6): 1177–1188.
...: the lower magnetite-rich zone and the upper sulfide-rich zone (cobaltiferous pyrite and chalcopyrite). Two generations of pyrite have been recognized: the fine-grained stratiform variety and the coarse-grained epigenetic variety. Most of the cobalt is contributed by the epigenetic variety of pyrite ( Nash...
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Journal Article
Journal: Economic Geology
Published: 01 May 2009
Economic Geology (2009) 104 (3): 437–444.
... and ferroan dolomite with disseminated to vein-controlled pyrite and pyrrhotite with minor sphalerite, barite, and barium silicate minerals ( Hitzman, 1986 ). Much of the pyrite is cobaltiferous ( Bernstein and Cox, 1986 ). During stage one, dolomitization remobilized carbonaceous matter and reprecipitated...
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Journal Article
Published: 01 April 2011
Mineralogical Magazine (2011) 75 (2): 295–302.
... of plumbiferous pyrite may indeed reflect a metastable solid solution due to the effect of crystallite sizes. The crystallite-size effect is the dependence of phase relations on particle size. For example, naturally occurring cobaltiferous pyrite with 15–20% (m/m) Co is, like our plumbiferous pyrite, incompatible...
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Journal Article
Published: 01 March 1984
Journal of the Geological Society (1984) 141 (2): 291–297.
... of Mackenzie Pap. geol. Surv. Can 1973 73-9 178 Bartholom P. Les minerais cupro-cobaltiféres de Kamoto (Katanga tjuestj. I Pétrographie Studia Universitatis “Lovanium”, Faculté des Sciences Kinshasa 1962 14 40 Bartholomé, P. 1974. On the diagenetic formation of ores in sedimentary beds...
Journal Article
Published: 01 April 2021
American Mineralogist (2021) 106 (4): 497–505.
... and correlation of properties. Inorganic Chemistry , 7 , 2208 – 2220 . Bowie , S.H.U. ( 1962 ) Reflection characteristics of ore minerals. Economic Geology , 57 , 983 – 985 . Brown , A.C. , and Bartholomé , P. ( 1972 ) Inhomogeneities in cobaltiferous pyrite from the Chibuluma...
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Journal Article
Journal: Economic Geology
Published: 01 March 2006
Economic Geology (2006) 101 (2): 275–280.
... Formation in and near the Challis quadrangle : U.S. Geological Survey Bulletin 1658 , p. 203 – 221 . Nash , J.T. , 1989 , Geology and geochemistry of synsedimentary cobaltiferous-pyrite deposits, Iron Creek, Lemhi County, Idaho : U.S. Geological Survey Bulletin 1882 , 33 p. Nash , J.T...
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