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Stilleite Mineral Data
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General Stilleite Information
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Chemical Formula: |
ZnSe |
Composition: |
Molecular Weight = 144.35 gm |
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Zinc 45.30 % Zn |
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Selenium 54.70 % Se |
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______ |
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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 |
Synonym: |
ICSD 67791 |
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PDF 37-1463 |
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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 - Hextetrahedral H-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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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 |
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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. |
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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. |
Fermion Index: |
Fermion Index = 0.06 Boson Index = 0.94 |
Photoelectric: |
PEStilleite = 67.66 barns/electron U=PEStilleite x rElectron Density= 315.57 barns/cc. |
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 |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.02)Sphalerite Group (Isometric: F4-3m) |
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02.08.02.01 Sphalerite (Zn,Fe)S F43m 4 3m |
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02.08.02.02 Stilleite ZnSe F43m 4 3m |
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02.08.02.03 Metacinnabar HgS F43m 4 3m |
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02.08.02.04 Tiemannite HgSe F43m 4 3m |
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02.08.02.05 Coloradoite HgTe F43m 4 3m |
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02.08.02.06 Hawleyite CdS F43m 4 3m |
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02.08.02.07 Rudashevskyite! (Fe,Zn)S F43m 4 3m |
Strunz Class: |
02.CB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CB -With Zn, Fe, Cu, Ag, Au, etc |
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02.CB.05a Hawleyite CdS F43m 4 3m |
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02.CB.05a Coloradoite HgTe F43m 4 3m |
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02.CB.05a Metacinnabar HgS F43m 4 3m |
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02.CB.05a Sphalerite (Zn,Fe)S F43m 4 3m |
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02.CB.05a Tiemannite HgSe F43m 4 3m |
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02.CB.05a Stilleite ZnSe F43m 4 3m |
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02.CB.05a Rudashevskyite! (Fe,Zn)S F43m 4 3m |
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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
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Print or Cut-and-Paste your Stilleite Specimen Label here :
Stilleite
ZnSe
Dana No: 02.08.02.02 Strunz No: 02.CB.05a
Locality:
Notes:
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