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spionkopite

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Journal Article
Published: 01 November 1980
The Canadian Mineralogist (1980) 18 (4): 511–518.
Journal Article
Published: 01 February 2008
The Canadian Mineralogist (2008) 46 (1): 219–231.
..., spionkopite, and digenite, which crystallize, with authigenic quartz, during diagenesis. Metasomatic enrichment in U and Se, which is responsible for the unusual mineralogy of the Musonoï deposit, firstly gave rise to the crystallization of Cu–Pd-bearing trogtalite and various palladium selenides...
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Journal Article
Published: 01 April 2005
The Canadian Mineralogist (2005) 43 (2): 623–635.
...Frédéric Hatert Abstract L’observation des sections polies, réalisées dans les sulfures de cuivre provenant de veines de quartz de la région de Vielsalm, Massif de Stavelot, Belgique, a permis de reconnaître la bornite, la chalcopyrite, l’idaïte, la covellite, la yarrowite, la spionkopite...
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Image
SEM photo of Au–Cu–Ag minerals in albite microveinlets in Ab–Px and Amp–Px ...
Published: 01 March 2018
-containing spionkopite with yarrowite intergrown with tetra-auricupride and copper electrum; d , copper sulfide (spionkopite and yarrowite) inclusions in copper electrum grain.
Image
RESULTS OF ELECTRON-MICROPROBE ANALYSES OF ATHABASCAITE, YARROWITE, AND SPI...
Published: 01 February 2008
TABLE 2. RESULTS OF ELECTRON-MICROPROBE ANALYSES OF ATHABASCAITE, YARROWITE, AND SPIONKOPITE FROM THE MUSONOÏ MINE
Journal Article
Published: 01 August 2007
The Canadian Mineralogist (2007) 45 (4): 723–750.
... + tennantite provides an uppermost temperature limit of ~440°C [at an a (S 2 ) = 10 −5 ]. (iii) A late stage of alteration (III) led to the replacement of the primary sulfides by yarrowite, spionkopite and rare covellite, together with goethite, under decreasing temperatures and rising activity of sulfur...
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Sequence of copper leaching and temperature determination on the basis of t...
Published: 01 February 2008
F ig . 8. Sequence of copper leaching and temperature determination on the basis of the Cu–S phase diagram. S: sulfur, Cv: covellite, Sp–Ya: spionkopite + yarrowite, An: anilite, Dg: digenite, Dj: djurleite, Cc: chalcocite (modified from Potter 1977 ).
Image
Photo (in refracted light) of electrum grain (470–500‰) in the interstices ...
Published: 01 March 2018
Fig. 9. Photo (in refracted light) of electrum grain (470–500‰) in the interstices of the albite–pyroxene matrix. The grain contains inclusions of tetra-auricupride and copper sulfides (anilite, geerite, spionkopite, and yarrowite) (stage Ic). The tetra-auricupride inclusions are similar in shape
Image
a. Replacement of Se-bearing digenite (Dg) by lamellar Se-bearing spionkopi...
Published: 01 February 2008
F ig . 3. a. Replacement of Se-bearing digenite (Dg) by lamellar Se-bearing spionkopite + yarrowite (SpYa). These sulfides are altered to malachite (Mal) and chalcomenite (Ch), which occur between quartz grains (Qtz). Reflected light, plane-polarized light (sample 1778). b. Grains of euhedral
Journal Article
Journal: Economic Geology
Published: 01 May 2014
Economic Geology (2014) 109 (3): 581–620.
... early and volumetrically minor assemblage of chalcopyrite-bornite-luzonite-covellite that precipitated between approximately 180° and 110°C, a dominant stage of chalcocite-djurleite that precipitated in the range of 110° to 90°C, and a minor late assemblage of covellite-digenite-(spionkopite/yarrowite...
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Journal Article
Journal: Economic Geology
Published: 01 December 1995
Economic Geology (1995) 90 (8): 2143–2155.
..., and distribution of Cu-S minerals indicate progressive alteration from chalcocite to covellite in the sequence chalcocite-djurleite-anilite-geerite-spionkopite-yarrowite-covellite. Bornite compositions plot on the Cu-Fe-S phase diagram along a line between ideal bornite (Cu 5 FeS 4 ) and Idaite (Cu 3 FeS 4...
Journal Article
Published: 01 April 2003
The Canadian Mineralogist (2003) 41 (2): 546–548.
... is describing zoned arsenopyrite crystals from the Red Lake area (p. 119), rather than “...layered, and some of the layers enriched in gold”. In Table 7.2, where he lists supergene minerals, covellite appears twice, first as CuS, then as yarrowite and spionkopite. Cubanite, a fairly common Cu sulfide in many...
Journal Article
Published: 01 March 2018
Russ. Geol. Geophys. (2018) 59 (3): 238–256.
...-containing spionkopite with yarrowite intergrown with tetra-auricupride and copper electrum; d , copper sulfide (spionkopite and yarrowite) inclusions in copper electrum grain. ...
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Journal Article
Published: 01 May 2001
Proceedings of the Yorkshire Geological Society (2001) 53 (3): 213–219.
... to secondary copper sulphides and oxides including digenite (Cu 9 S 5 ), covelline (CuS), spionkopite (Cu 39 S 28 ), cuprite (Cu 2 O), tenorite (CuO) and native copper. Late generations of calcite are interbanded with botryoidal malachite and limonite and minor amounts of manganese oxide minerals. General...
FIGURES
Image
a. Fracture filled with oxidation minerals (gray), localized between bornit...
Published: 01 April 2005
(pink), included in oxidation minerals (gray). Small grains of covellite (blue) also are visible along the edge of the photograph. Reflected light microscopy, plane-polarized light (sample BOR1–001). c. Replacement of digenite + anilite (light blue) to lamellar yarrowite + spionkopite (dark blue
Image
a. Chalcopyrite lamellae (yellow) included along the {100} directions of bo...
Published: 01 April 2005
) and chalcocite + djurleite (bluish). Reflected light microscopy, plane-polarized light (sample VIEL–001). c. Symplectitic intergrowth of “anomalous bornite” (orange) and lamellae of spionkopite + yarrowite (blue). Grains of covellite (purple) occur on the border of fractures cross-cutting the symplectitic
Journal Article
Published: 01 September 2012
European Journal of Mineralogy (2012) 24 (5): 879–884.
... are known: Cu 2 S, chalcocite; Cu 1.97 S, djurleite; Cu 1.8 S, digenite; Cu 1.75 S, anilite; Cu l.6 S, geerite; Cu 1.39 S, spionkopite; Cu 1.12 S yarrowite; CuS, covellite; CuS 2 ( Pattrick et al ., 1997 ). Among them, only four are thermodynamically stable at environmental conditions, namely chalcocite...
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Journal Article
Published: 01 February 2003
The Canadian Mineralogist (2003) 41 (1): 185–200.
... with djurleite (Cu 1.94 S), anilite (Cu 7 S 4 ), digenite (Cu 9 S 5 ), and metastable yarrowite (Cu 9 S 8 ) and spionkopite (Cu 39 S 28 ) (determined by XRD analysis). Chalcocite contains inclusions of stromeyerite and is partly replaced by dendritic covellite in association with dendritic gold. Au–Ag alloy...
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Journal Article
Published: 01 February 2008
Mineralogical Magazine (2008) 72 (1): 175–184.
... chalcocite by the leach, chalcocite is replaced sequentially by digenite (Cu 1.96 S), anilite (Cu 1.75 S), geerite (Cu 1.6 S), spionkopite (Cu 1.4 S), yarrowite (Cu 1.1 S), and, finally, covellite (CuS). Using a flow-through environmental cell loaded with chalcocite and exposed to ferric sulphate...
FIGURES
Journal Article
Journal: Economic Geology
Published: 01 August 2023
Economic Geology (2023) 118 (5): 1085–1124.
... are cemented by quartz, carbonate, chlorite, fine-grained pyrite and chalcopyrite, and rare laumontite. Ore mineralogy is dominated by pyrite and marcasite (≈80 vol %) with variable amounts of chalcopyrite and sphalerite, Cu-rich phases (e.g., bornite, spionkopite), and traces of galena. Several features...
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