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General Baumhauerite-2a Information |
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 Chemical Formula: |
Pb3As4S9 | ||
| Composition: |
Molecular Weight = 1,209.88 gm | ||
| Arsenic 24.77 % As | |||
| Lead 51.38 % Pb | |||
| Sulfur 23.85 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Pb3As4S9 | ||
| IMA Status: |
Approved IMA 1990 (Dana # Added) | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Name Origin: |
Named as the monoclinic polymorph of baumhauerite. | ||
| Name Pronunciation: |
Baumhauerite-2a + Pronunciation  |
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Baumhauerite-2a Image | |||
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Images:
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Baumhauerite-2a Crystallography |
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| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: Unk | ||
Physical Properties of Baumhauerite-2a |
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| Color: |
Steel gray. | ||
| Diaphaneity: |
Opaque | ||
| Habit: |
Crystalline - Fine - Occurs as well-formed fine sized crystals. | ||
| Hardness: |
3 - Calcite | ||
| Luster: |
Metallic | ||
| Streak: |
reddish brown | ||
Calculated Properties of Baumhauerite-2a |
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| Fermion Index: |
Fermion Index = 0.11 Boson Index = 0.89 |
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| Photoelectric: |
PEBaumhauerite-2a = 933.98 barns/electron U=PEBaumhauerite-2a x rElectron Density= . barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Baumhauerite-2a is Not Radioactive |
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Baumhauerite-2a Classification |
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| Dana Class: |
03.06.13.02 (03)Sulfides - Sulfosalts | ||
| (03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals | |||
| (03.06.13)Dana Group | |||
| Strunz Class: |
02.HC.05b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf | ||
| 02.H - Sulfosalts of SnS Archetype | |||
| 02.HC -With only Pb | |||
Other Baumhauerite-2a Information |
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| See Also: |
Links to other databases for Baumhauerite-2a : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - GeoScienceWorld 5 - Google Images 6 - Google Scholar 7 - MinDAT 8 - Mineralienatlas (Deutsch) 9 - Online Mineral Museum 10 - QUT Mineral Atlas 11 - Ruff.Info Search for Baumhauerite-2a using: Visit our Advertisers for Baumhauerite-2a : A Bijoux Google Search for Baumhauerite-2aAdam's Minerals Google Search for Baumhauerite-2a Cape Minerals Google Search for Baumhauerite-2a Dakota Matrix Minerals Google Search for Baumhauerite-2a Excalibur Mineral Corp. Google Search for Baumhauerite-2a Exceptional Minerals Google Search for Baumhauerite-2a John Betts Fine Minerals Search for Baumhauerite-2a McDougall Minerals Google Search for Baumhauerite-2a Mineral News Website Link Rock and Mineral Shows Google Search for Baumhauerite-2a Weinrich Minerals, Inc. Google Search for Baumhauerite-2a Ask about Baumhauerite-2a here : Print or Cut-and-Paste your Baumhauerite-2a Specimen Label here :
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