Bellidoite Mineral Data + 
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- 2.4.9.1 Bellidoite Cu2Se P 41/m 4/m
- II/B.03-10 Berzelianite Cu2Se F m3m 4/m 3 2/m
- II/B.03-20 Bellidoite Cu2Se P 41/m 4/m
- II/B.03-30 Crookesite Cu7(Tl,Ag)Se4 I 4 4
- II/B.03-40 Sabatierite Cu4TlSe3 P 4/mmm 4/m 2/m 2/m
- II/B.03-50 Umangite Cu3Se2 P 21212 2 2 2
- II/B.03-60 Athabascaite Cu5Se4 Unk Ortho
General Bellidoite Information |
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 Chemical Formula: |
Cu2Se | ||
| Composition: |
Molecular Weight = 206.05 gm | ||
| Copper 61.68 % Cu | |||
| Selenium 38.32 % Se | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Cu2Se | ||
| Environment: |
Formed at moderate to low temperature with other hydrothermal selenides and sulfides. | ||
| IMA Status: |
Approved IMA 1975 | ||
| Locality: |
From Habri, near Tisnova, Czechoslovakia. Link to MinDat.org Location Data. | ||
| Name Origin: |
For Eleodoro Bellido Bravo, Director of Servicio de Geologia y Mineria, Peru. | ||
| Synonym: |
ICSD 30230 | ||
| PDF 46-1129 | |||
Bellidoite Image | |||
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Images:
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Bellidoite Crystallography |
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| Axial Ratios: |
a:c = 1:1.01909 | ||
| Cell Dimensions: |
a = 11.52, c = 11.74, Z = 32; V = 1,558.02 Den(Calc)= 7.03 | ||
| Crystal System: |
Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: P 41/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.06(1), 3.38(0.8), 1.763(0.7), | ||
Physical Properties of Bellidoite |
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| Color: |
Silver gray. | ||
| Density: |
7.03 | ||
| Diaphaniety: |
Opaque | ||
| Hardness: |
1.5-2 - Talc-Gypsum | ||
| Luster: |
Metallic | ||
Optical Properties of Bellidoite |
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| RL Anisotrophism: |
Very weak in gray colors. | ||
| RL Color: |
Creamy white. | ||
| RL Pleochroism: |
Very weak. | ||
Calculated Properties of Bellidoite |
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| Electron Density: |
relectron=6.28 gm/cc |
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| Fermion Index |
Fermion Index = 0.02912 Boson Index = 0.97088 |
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| Photoelectric: |
PEBellidoite = 59.11 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bellidoite is Not Radioactive |
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Bellidoite Classification |
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| Dana Class: |
2.4.9.1 (2)Sulfides - Including Selenides and Tellurides | ||
| (2.4)where Am Bn Xp, with (m+n):p=2:1 | |||
| (2.4.9)Dana Group | |||
| Strunz Class: |
II/B.03-20 II - Sulfides and sulphosalts | ||
| II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Selenides with predominant Copper | |||
| II/B.03 - Bertzeliannite - Athabascaite series | |||
Other Bellidoite Information |
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) | ||
| See Also: |
Links to other databases for Bellidoite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Bellidoite using: Visit our Advertisers for Bellidoite : Translate Bellidoite Mineral Data : Ask about Bellidoite here : Print or Cut-and-Paste your Bellidoite Specimen Label here :
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