UM1975-12-S:BiCu

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Discuss UM1975-12-S:BiCu

Edit UM1975-12-S:BiCu Add Synonym Edit CIF structures Clear Cache

Formula:

Cu₄BiS₄

Colour:

steel-gray

Lustre:

Metallic

Found in veinlets cutting recrystallized garnet skarns of Sayak group; also as irregular to elongated inclusions in chalcopyrite, coexisting with aikinite, gold, hessite, and a Zn,Bi-bearing tetrahedrite.

Data for the synonymous Unnamed (Cu-Bi Sulphide): Stability limit: 200-400°.

In the synthetic system Cu-Bi-S, Wang (1994) observed a metastable solid solution series Cu₁₀Bi₂S₁₃ at 178°C, coexisting with CuS.

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Unique IdentifiersHide

Mindat ID:

47360

Long-form identifier:

mindat:1:1:47360:0

Similar NamesHide

UM1971-12-S:BiCu		~Cu₈BiS₆
UM1990-52-Se:BiCu		Cu₁₁(Ni,Co)_0.4Bi₂Se₁₃
UM1993-12-S:BiCu		Cu₃BiS₃

Physical Properties of UM1975-12-S:BiCuHide

Lustre:

Metallic

Colour:

Steel-gray

Hardness:

VHN₂₀=210 - 220 kg/mm² - Vickers

Optical Data of UM1975-12-S:BiCuHide

Anisotropism:

strong

Bireflectance:

distinct, pale rose-yellow to dark greenish-gray

Colour in reflected light:

light pale gray with a blue or lilac tint

Chemistry of UM1975-12-S:BiCuHide

Mindat Formula:

Cu₄BiS₄

Element Weights:

Element	% weight
Cu	42.978 %
Bi	35.335 %
S	21.687 %

Calculated from ideal end-member formula.

Elements listed:

Bi, Cu, S - search for minerals with similar chemistry

Synonyms of UM1975-12-S:BiCuHide

Unnamed (Cu-Bi Sulphide)

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for UM1975-12-S:BiCuHide

mindat.org URL:

https://www.mindat.org/min-47360.html
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References for UM1975-12-S:BiCuHide

Reference List:

Abulgazina, S.D., Kuzentsova, E.I., Slyusarev, A.P. (1975): Composition of two bismuth copper sulfosalts from skarn deposits of the Sayak group. Doklady Akad. Nauk SSSR: 222: 183-185 (in Russian). (Ab. in: Fleischer, M., Pabst, A., Cabri, L.J. (1976): New mineral names. American Mineralogist: 61: 1055)

Wang, Naiding (1994) The Cu-Bi-S system: results from low-temperature experiments. Mineralogical Magazine, 58 (391) 201-204 doi:10.1180/minmag.1994.058.391.02

Gertsen, L. E.; Pavlova, Z. N. (2005): Geochemistry and mineralogy of bismuth in ores of porphyry copper deposits in Kazakhstan. Kazakstan Respublikasy Ulttyk Gylym Akademiyasynyn Khabarlary, Geologiyalyk Seriyasy: 4: 17-30 (in Russian)

Smith, D. G.W.; Nickel, E. H. (2007) A System of Codification for Unnamed Minerals: Report of the Subcommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. The Canadian Mineralogist, 45 (4). 983-990 doi:10.2113/gscanmin.45.4.983

Localities for UM1975-12-S:BiCuHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Kazakhstan

Karaganda Region

Balkhash

ⓘ Sayak Cu ore field

Abulgazina et al. (1975)