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General Stilleite Information |
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 Chemical Formula: |
ZnSe | ||
| Composition: |
Molecular Weight = 144.35 gm | ||
| Zinc 45.30 % Zn | |||
| Selenium 54.70 % Se | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
ZnSe | ||
| Environment: |
Included in linnaeite and intermixed with other selenides. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1956 | ||
| Locality: |
Kasolo (Shinkolobwe), Katanga (Shaba), Congo (Zaire). Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Hans Stille (1876-1966), distinguished German geologist. | ||
| Name Pronunciation: |
Stilleite + Pronunciation  |
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| Synonym: |
ICSD 67791 | ||
| PDF 37-1463 | |||
Search for Stilleite Images | |||
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Images:
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Stilleite Crystallography |
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| Cell Dimensions: |
a = 5.67, Z = 4; V = 182.28 Den(Calc)= 5.26 | ||
| Crystal System: |
Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: F43m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.273(1), 2.003(0.7), 1.707(0.44), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Stilleite |
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| Color: |
Gray. | ||
| Density: |
5.42 | ||
| Diaphaneity: |
Translucent to Opaque | ||
| Habit: |
Inclusions - Generally found as inclusions in other minerals. | ||
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. | ||
| Hardness: |
5 - Apatite | ||
| Luster: |
Metallic | ||
Optical Properties of Stilleite |
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| Optical Data: |
Isotropic, n=2.5. | ||
| RL Color: |
Resembles tetrahedrite without the olive-brown or greenish blue hues. | ||
Calculated Properties of Stilleite |
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| Electron Density: |
Bulk Density (Electron Density)=4.66 gm/cc note: Specific Gravity of Stilleite =5.26 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.06 Boson Index = 0.94 |
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| Photoelectric: |
PEStilleite = 67.66 barns/electron U=PEStilleite x rElectron Density= 315.57 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Stilleite is Not Radioactive |
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Stilleite Classification |
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| Dana Class: |
02.08.02.02 (02)Sulfides - Including Selenides and Tellurides | ||
| (02.08)where Am Bn Xp, with (m+n):p=1:1 | |||
| (02.08.02)Sphalerite Group (Isometric: F4-3m) | |||
| Strunz Class: |
02.CB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf | ||
| 02.C - Metal Sulfides, M:S = 1:1 (and similar) | |||
| 02.CB -With Zn, Fe, Cu, Ag, Au, etc | |||
Other Stilleite 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 Stilleite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Stilleite using: Visit our Advertisers for Stilleite : A Bijoux Google Search for StilleiteAdam's Minerals Google Search for Stilleite Cape Minerals Google Search for Stilleite Dakota Matrix Minerals Google Search for Stilleite Excalibur Mineral Corp. Google Search for Stilleite Exceptional Minerals Google Search for Stilleite John Betts Fine Minerals Search for Stilleite McDougall Minerals Google Search for Stilleite Mineral News Website Link Rock and Mineral Shows Google Search for Stilleite Weinrich Minerals, Inc. Google Search for Stilleite Ask about Stilleite here : Print or Cut-and-Paste your Stilleite Specimen Label here :
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