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Příbramite

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Formula:
CuSbSe2
Colour:
lead grey
Lustre:
Metallic
Hardness:
3 - 4
Specific Gravity:
5.884 (Calculated)
Crystal System:
Orthorhombic
Name:
Named for the type locality.
The Se analogue of chalcostibite.

Chemically related to permingeatite and bytízite.

The associates also include a new Hg-Cu-Sb selenide and a new Sb-Cu selenide.

There is a single Cu and single Sb site in the structure, which also contains two Se sites. Sb environment is square-pyramidal, and links to form SbSe2 chains || b; Cu forms CuSe4 tetrahedra also forming chains, CuSe3 composition, that are also parallel to b. The two chain types joint to give sheets perpendicular to c.


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Classification of PříbramiteHide

Approved
Approval Year:
2015
First Published:
2017

Physical Properties of PříbramiteHide

Metallic
Colour:
lead grey
Hardness:
3 - 4 on Mohs scale
Tenacity:
Brittle
Density:
5.884 g/cm3 (Calculated)

Optical Data of PříbramiteHide

Type:
Anisotropic
Anisotropism:
Strong, grey to brownish rotation tints
Bireflectance:
medium
Colour in reflected light:
Grey with a yellowish hue
Internal Reflections:
Not observed
Pleochroism:
Weak
Comments:
Grey tints

Chemical Properties of PříbramiteHide

Formula:
CuSbSe2
Common Impurities:
Fe,Pb,Tl,Hg

Crystallography of PříbramiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Cell Parameters:
a = 6.3042(15) Å, b = 3.980(1) Å, c = 14.989(4) Å
Ratio:
a:b:c = 1.584 : 1 : 3.766
Unit Cell V:
376.09 ų
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.152Å(40)
3.113Å(100)
3.085Å(40)
3.070Å(30)
2.394Å(63)
1.990Å(38)
1.844Å(42)
1.833Å(33)

Type Occurrence of PříbramiteHide

General Appearance of Type Material:
Columnar crystals, up to 60 × 112 μm, forming aggregates up to 150 μm across, in calcite vein; intergrown with and replacing older permingeatite; also closely associated with antimonselite
Place of Conservation of Type Material:
Cotypes: (1) Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, Praha 9, Czech Republic (catalogue number P1P 15/2015) and (2) the Mining Museum Příbram, Czech Republic (catalogue number 1/2016)
Empirical Formula of Type Material:
Cu1.00(Sb1.02As0.01)1.03(Se1.81S0.15)1.96
Chemical Analysis of Type Material:
Cu18.52 %
Sb35.47 %
Se46.01 %
Total:100 %
Associated Minerals at Type Locality:
Reference:
Škácha, P., Sejkora, J., Plášil, J. (2017): Příbramite, CuSbSe2, the Se-analogue of chalcostibite, a new mineral from Příbram, Czech Republic. European Journal of Mineralogy: 29: 653-661

Synonyms of PříbramiteHide

Relationship of Příbramite to other SpeciesHide

Other Members of this group:
ChalcostibiteCuSbS2Orth. mmm (2/m 2/m 2/m)
EmplectiteCuBiS2Orth. mmm (2/m 2/m 2/m) : Pmna
GrundmanniteCuBiSe2Orth. mmm (2/m 2/m 2/m) : Pnma

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.

References for PříbramiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Luming Chen, Deren Li, Guangxing Wang, and Qifa Zhang (1995): A study of two unnamed selenide minerals. Acta Mineralogica Sinica 15(4), 418-421 (in Chinese with English abstract). [as unnamed Cu-Sb selenide]
Jambor, J.L., Grew, E.S., and Roberts, A.C. (1996): New Mineral Names. American Mineralogist 81, 1513-1518. [Abstract of 1995 paper]
Škácha, P., Sejkora, J. and Plášil, J. (2016) Příbramite, IMA 2015-127. CNMNC Newsletter No. 31, June 2016, page 693; Mineralogical Magazine: 80: 691–697.
Škácha, P., Sejkora, J., Plášil, J. (2017): Příbramite, CuSbSe2, the Se-analogue of chalcostibite, a new mineral from Příbram, Czech Republic. European Journal of Mineralogy, 29, 653-661.

Internet Links for PříbramiteHide

Localities for PříbramiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China
 
Luming Chen, Deren Li, Guangxing Wang, and Qifa Zhang (1995): A study of two unnamed selenide minerals. Acta Mineralogica Sinica 15(4), 418-421 (in Chinese with English abstract). [as unnamed Cu-Sb selenide]
Czech Republic
 
  • Central Bohemian Region
Škácha, P., Sejkora, J., & Plášil, J. (2017). Selenide mineralization in the Příbram uranium and base-metal district (Czech Republic). Minerals, 7(6), 91.
      • Háje
        • Uranium Mine No. 16 (Shaft No. 16)
Pavel Škácha, Jakub Plášil, Jiří Sejkora, Viktor Goliáš (2015): Sulfur-rich antimonselite, Sb2(Se,S)3 in the Se-bearing mineral association from the Příbram uranium and base metal ore district, Czech Republic. Journal of Geosciences, 60, 23-29. [as unnamed Cu-Sb selenide]; Škácha, P., Sejkora, J. and Plášil, J. (2016) Příbramite, IMA 2015-127. CNMNC Newsletter No. 31, June 2016, page 693; Mineralogical Magazine: 80: 691–697; Škácha, P., Sejkora, J., Plášil, J. (2017): Příbramite, CuSbSe2, the Se-analogue of chalcostibite, a new mineral from Příbram, Czech Republic. European Journal of Mineralogy, 29, 653-661.
 
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