Platynite Mineral Data + 
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- 2.8.21.1 Platynite ? (Bi,Pb)3(Se,S)4 R 3m 3 2/m
- II/D.12-10 Kochkarite PbBi4Te7 P 3m1 3 2/m
- II/D.12-20 Aleksite PbBi2Te2S2(?) P 3m1 3 2/m
- II/D.12-30 Poubaite PbBi2Se2(Te,S)2 R 3m 3 2/m
- II/D.12-40 Platynite (Bi,Pb)3(Se,S)4 R 3m 3 2/m
- II/D.12-50 Rucklidgeite (Bi,Pb)3Te4 R 3m 3 2/m
- II/D.12-55 Saddlebackite! Pb2Bi2Te2S3 Unk Hex
- II/D.12-60 Babkinite! Pb2Bi2(S,Se)3 P 3,P 3m Trig
General Platynite Information |
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 Chemical Formula: |
(Bi,Pb)3(Se,S)4 | ||
| Composition: |
Molecular Weight = 894.11 gm | ||
| Bismuth 46.75 % Bi | |||
| Lead 23.17 % Pb | |||
| Selenium 26.49 % Se | |||
| Sulfur 3.59 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Bi2PbSe3S | ||
| Environment: |
Discredited as being a mixture of laitakarite and selenian galena. | ||
| IMA Status: |
Discredited IMA 1999 | ||
| Locality: |
Falun, Dalecarlia, Sweden. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named in 1910 from the Greek "to broaden", in allusion to its platy habit. | ||
| Synonym: |
Discredited | ||
| IMA1999-A | |||
Platynite Image | |||
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Images:
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Platynite Crystallography |
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| Axial Ratios: |
a:c = 1:2.44994 | ||
| Cell Dimensions: |
a = 8.49, c = 20.8, Z = 8; V = 1,298.40 Den(Calc)= 9.15 | ||
| Crystal System: |
Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.965(1), 2.971(0.4), 5.45(0.2), | ||
Physical Properties of Platynite |
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| Cleavage: |
[001] Good, [010] Good, [100] Good | ||
| Color: |
Gray, Black, White. | ||
| Density: |
7.98 | ||
| Diaphaniety: |
Opaque | ||
| Habit: |
Platy - Sheet forms (e.g. micas). | ||
| Hardness: |
2-3 - Gypsum-Calcite | ||
| Luster: |
Metallic | ||
| Streak: |
shining black | ||
Optical Properties of Platynite |
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| RL Anisotrophism: |
Strong. | ||
Calculated Properties of Platynite |
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| Electron Density: |
relectron=7.49 gm/cc |
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| Fermion Index |
Fermion Index = 0.07161 Boson Index = 0.92839 |
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| Photoelectric: |
PEPlatynite =1,376.33 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Platynite is Not Radioactive |
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Platynite Classification |
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| Dana Class: |
2.8.21.1 (2)Sulfides - Including Selenides and Tellurides | ||
| (2.8)where Am Bn Xp, with (m+n):p=1:1 | |||
| (2.8.21)Dana Group | |||
| Strunz Class: |
II/D.12-40 II - Sulfides and sulphosalts | ||
| II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold | |||
| II/D.12 - Tetradymite group, Poubaite - Rucklidgeite series | |||
Other Platynite Information |
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| References: |
NAME( CanMin, 10/99) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) | ||
| See Also: |
Links to other databases for Platynite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris Search for Platynite using: Visit our Advertisers for Platynite : Translate Platynite Mineral Data : Ask about Platynite here : Print or Cut-and-Paste your Platynite Specimen Label here :
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