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Bytízite

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About BytíziteHide

Formula:
Cu3SbSe3
Colour:
Steel-grey
Lustre:
Metallic
Hardness:
2 - 3
Specific Gravity:
6.324 (Calculated)
Crystal System:
Orthorhombic
Name:
Named after its type locality, the Bytíz deposit, near the village Bytíz.
Known synthetic analogue.
Chemically related to permingeatite and příbramite. The SbSe analogue of wittichenite. Chemically the Se analogue of skinnerite, but this is not a true analogy due to the difference in crystal system.

The crystal structure corresponds to the structure of synthetic Cu3SbSe3 and is structurally related to the high-temperature (>121°C) orthorhombic modification of Cu3SbS3.


Classification of BytíziteHide

Approved
Approval Year:
2016
First Published:
2018

Physical Properties of BytíziteHide

Metallic
Transparency:
Opaque
Colour:
Steel-grey
Hardness:
2 - 3 on Mohs scale
Cleavage:
None Observed
Fracture:
None observed
Density:
6.324 g/cm3 (Calculated)

Optical Data of BytíziteHide

Type:
Anisotropic
Anisotropism:
Strong, grey to brownish rotation tints
Bireflectance:
Weak
Colour in reflected light:
Grey with yellowish to brownish hue
Internal Reflections:
None observed
Pleochroism:
Weak

Chemical Properties of BytíziteHide

Formula:
Cu3SbSe3

Crystallography of BytíziteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 7.959(1) Å, b = 10.583(1) Å, c = 6.824(1) Å
Ratio:
a:b:c = 0.752 : 1 : 0.645
Unit Cell V:
574.82 ų
Z:
4
Morphology:
Anhedral grains

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.74Å(30)
3.27Å(50)
3.01Å(25)
2.88Å(35)
2.68Å(100)
2.48Å(20)
1.86Å(30)
1.79Å(25)

Type Occurrence of BytíziteHide

General Appearance of Type Material:
Allotriomorphic aggregates, up to 300 μm, with individual grains ca. 10-40 μm accross
Place of Conservation of Type Material:
Mineralogical collections of the (1) National Museum, Department of Mineralogy and Petrology, Praha, Czech Republic (catalogue number P1P 11/2016), and (2) the Mining Museum Příbram, Březové Hory, Czech Republic, catalogue number 2/2016.
Empirical Formula of Type Material:
(Cu3.00Fe0.01Ag0.01) Σ3.02(Sb0.97As0.06) Σ1.03(Se2.94S0.01) Σ2.95
Chemical Analysis of Type Material:
Cu34.71 %
Sb22.16 %
Se43.13 %
Total:100 %
Associated Minerals at Type Locality:
Reference:
Škácha, P., Sejkora, J., Plášil, J. (2018) Bytízite, a new Cu-Sb selenide from Příbram, Czech Republic. Mineralogical Magazine: 82: 199-209.

Synonyms of BytíziteHide

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 BytíziteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Škácha, P., Sejkora, J., Plášil, J. (2016) Bytízite, IMA 2016-044. CNMNC Newsletter No. 33, October 2016, page 1138. Mineralogical Magazine: 80: 1135–1144.
Škácha, P., Sejkora, J., Plášil, J. (2018) Bytízite, a new Cu-Sb selenide from Příbram, Czech Republic. Mineralogical Magazine: 82: 199-209.

Internet Links for BytíziteHide

Localities for BytíziteHide

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.
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.
      • Bytíz
http://www.jachymov2016.cz/abstracts (pp. 83-85).
      • Háje
        • Uranium Mine No. 16 (Shaft No. 16)
Škácha, P., Sejkora, J., Plášil, J. (2016): Bytízite, IMA 2016-044. CNMNC Newsletter No. 33, October 2016, page 1138; Mineralogical Magazine: 80: 1135–1144; http://www.jachymov2016.cz/abstracts (pp. 83-85); Škácha, P., Sejkora, J. & Plášil, J. (2018): Bytízite, a new Cu-Sb selenide from Příbram, Czech Republic. Mineral. Mag. 82, 199-209.
 
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