Příbramite
A valid IMA mineral species
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Formula:
CuSbSe2
Colour:
Lead grey
Lustre:
Metallic
Hardness:
3 - 4
Specific Gravity:
5.884 (Calculated)
Crystal System:
Orthorhombic
Member of:
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.
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.
Name Encoding
CP1252:
Príbramite
Latin-1:
Príbramite
ASCII-7:
Pribramite
Unique Identifiers
Mindat ID:
47784
Long-form identifier:
mindat:1:1:47784:6
Similar Names
| Przibramite (of Glocker) | A synonym of Goethite | α-Fe3+O(OH) |
| Przibramite (of Huot) | A synonym of 'Cadmium-bearing Sphalerite' | (Zn,Cd)S |
IMA Classification of Příbramite
Approved
Approval year:
2015
First published:
2017
Classification of Příbramite
2.HA.05
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
A : With Cu, Ag, Fe (without Pb)
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
A : With Cu, Ag, Fe (without Pb)
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Pbm | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Příbramite
Metallic
Transparency:
Opaque
Colour:
Lead grey
Hardness:
3 - 4 on Mohs scale
Hardness Data:
Estimated
Comment:
By analogy to chalcostibite.
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
None observed
Density:
5.884 g/cm3 (Calculated)
Comment:
Calculated value based on the empirical formula.
Optical Data of Příbramite
Anisotropism:
Strong, grey to brownish rotation tints
Bireflectance:
Medium
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 39.6% | 42.1% |
| 420nm | 39.9% | 43.1% |
| 440nm | 39.9% | 43.9% |
| 460nm | 39.9% | 44.6% |
| 470nm | 39.8% | 44.8% |
| 480nm | 39.8% | 44.9% |
| 500nm | 39.9% | 45.2% |
| 520nm | 40.1% | 45.6% |
| 540nm | 40.4% | 46.0% |
| 546nm | 40.4% | 46.2% |
| 560nm | 40.6% | 46.4% |
| 580nm | 40.5% | 46.6% |
| 589nm | 40.4% | 46.5% |
| 600nm | 40.2% | 46.4% |
| 620nm | 39.8% | 45.9% |
| 640nm | 39.2% | 45.2% |
| 650nm | 38.9% | 44.8% |
| 660nm | 38.5% | 44.3% |
| 680nm | 38.1% | 43.6% |
| 700nm | 37.4% | 42.8% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 46.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Grey with a yellowish hue
Internal Reflections:
Not observed
Pleochroism:
Weak
Comments:
Grey tints
Chemistry of Příbramite
Mindat Formula:
CuSbSe2
Element Weights:
Elements listed:
Common Impurities:
Fe,Pb,Tl,Hg
Crystallography of Příbramite
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 Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.152 Å | (40) |
| 3.113 Å | (100) |
| 3.085 Å | (40) |
| 3.070 Å | (30) |
| 2.394 Å | (63) |
| 1.990 Å | (38) |
| 1.844 Å | (42) |
| 1.833 Å | (33) |
Locality:
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Příbramite
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:
| Cu | 18.52 % |
|---|---|
| Sb | 35.47 % |
| Se | 46.01 % |
| Total: | 100 % |
Associated Minerals at Type Locality:
Synonyms of Příbramite
Other Language Names for Příbramite
Dutch:Příbramiet
German:Příbramit
Relationship of Příbramite to other Species
Member of:
Other Members of Chalcostibite Group:
| Chalcostibite | CuSbS2 | Orth. mmm (2/m 2/m 2/m) |
| Emplectite | CuBiS2 | Orth. mmm (2/m 2/m 2/m) : Pmna |
| Grundmannite | CuBiSe2 | Orth. mmm (2/m 2/m 2/m) : Pnma |
Related Minerals - Strunz-mindat Grouping
| 2.HA.05 | Grundmannite | CuBiSe2 |
| 2.HA.05 | Emplectite | CuBiS2 |
| 2.HA.05 | Hansblockite | (Cu,Hg)(Bi,Pb)Se2 |
| 2.HA.05 | Chalcostibite | CuSbS2 |
| 2.HA.10 | Miargyrite | AgSbS2 |
| 2.HA.20 | Sunshuite | FeBi2S4 |
| 2.HA.20 | Garavellite | FeSbBiS4 |
| 2.HA.20 | Berthierite | FeSb2S4 |
| 2.HA.20 | Graţianite | MnBi2S4 |
| 2.HA.20 | Clerite | MnSb2S4 |
| 2.HA.25 | Aramayoite | Ag3Sb2(Bi,Sb)S6 |
| 2.HA.25 | Baumstarkite | Ag3Sb3S6 |
| 2.HA.30 | Zhonghongite | Cu29(As,Sb)12S33 |
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.
Internet Links for Příbramite
mindat.org URL:
https://www.mindat.org/min-47784.html
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References for Příbramite
Reference List:
Jambor, John L., Grew, Edward S., Roberts, Andrew C. (1996) New mineral names. American Mineralogist, 81. 1513-1518
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2016, CNMNC Newsletter no 31. Mineralogical Magazine, 80 (4) 691-697 doi:10.1180/minmag.2016.080.083
Localities for Příbramite
Showing 3 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
China | |
| Luming Chen et al. (1995) | |
Czech Republic | |
| Škácha et al. (2017) |
| Mineralogical Magazine +4 other references |
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