Bytízite
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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.
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 Bytízite
Physical Properties of Bytízite
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 Bytízite
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 Bytízite
Formula:
Cu3SbSe3
Elements listed:
Crystallography of Bytízite
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 Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.74 | (30) |
| 3.27 | (50) |
| 3.01 | (25) |
| 2.88 | (35) |
| 2.68 | (100) |
| 2.48 | (20) |
| 1.86 | (30) |
| 1.79 | (25) |
Type Occurrence of Bytízite
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:
| Cu | 34.71 % |
|---|---|
| Sb | 22.16 % |
| Se | 43.13 % |
| 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 Bytízite
Other Information
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 Bytízite
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.
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. Mineralogical Magazine: 82: 199-209.
Internet Links for Bytízite
mindat.org URL:
https://www.mindat.org/min-47927.html
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Localities for Bytízite
ⓘ - 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.
- 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).
All localities listed without proper references should be considered as questionable.
Czech Republic | |
| http://www.jachymov2016.cz/abstracts (pp. 83-85). |
| 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. |