General Schollhornite Information Chemical Formula: |
Na0.3CrS2•(H2O) |
Composition: |
Molecular Weight = 141.04 gm |
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Sodium 4.89 % Na |
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Chromium 36.87 % Cr |
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Hydrogen 1.43 % H |
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Sulfur 45.47 % S |
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Oxygen 11.34 % O |
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100.00 % |
Empirical Formula: |
Na0.3CrS2•(H2O) |
Environment: |
Extra-terrestrial meteorite. |
IMA Status: |
Approved IMA 1985 |
Locality: |
Waethering product of caswellsilverite in the Norton County enstatite achondrite. Link to MinDat.org Location Data. |
Name Origin: |
Named for Robert Schollhorn, German chemist. |
Name Pronunciation: |
Schollhornite + Pronunciation |
Synonym: |
Schoellhornite |
| | Schollhornite Image
Images:
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Schollhornite Crystallography Axial Ratios: |
a:c = 1:8.01204 |
Cell Dimensions: |
a = 3.32, c = 26.6, Z = 3; V = 253.92 Den(Calc)= 2.77 |
Crystal System: |
Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m ? |
X Ray Diffraction: |
By Intensity(I/Io): 8.85(1), 2.53(0.5), 2.8(0.5), |
| Physical Properties of Schollhornite Cleavage: |
{0001} Perfect |
Color: |
Gray. |
Density: |
2.7 |
Diaphaneity: |
Opaque |
Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
Hardness: |
1.5-2 - Talc-Gypsum |
Luster: |
Metallic |
| Optical Properties of Schollhornite RL Anisotrophism: |
Strong. |
RL Color: |
Gray in air, bluish gray in oil. |
RL Pleochroism: |
Distinct, white with yellowish tint to light gray with bluish or greenish tint. |
Reflectivity |
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| Calculated Properties of Schollhornite Electron Density: |
Bulk Density (Electron Density)=2.72 gm/cc |
note: Specific Gravity of Schollhornite =2.77 gm/cc. Fermion Index: |
Fermion Index = 0.03 |
Boson Index = 0.97 Photoelectric: |
PESchollhornite = 10.67 barns/electron |
U=PESchollhornite x rElectron Density= 29.05 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Schollhornite is Not Radioactive | Schollhornite Classification Dana Class: |
02.09.17.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.09)where Am Bn Xp, with (m+n):p=1:1 |
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(02.09.17)Caswellsilverite Group |
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Strunz Class: |
02.FB.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O |
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02.FB -With Alkalies (without Cl, etc.) |
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| Other Schollhornite Information References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1) |
See Also: |
Links to other databases for Schollhornite : |
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 Search for Schollhornite using: Visit our Advertisers for Schollhornite : A Bijoux Google Search for SchollhorniteAdam's Minerals Google Search for Schollhornite Cape Minerals Google Search for Schollhornite Dakota Matrix Minerals Google Search for Schollhornite Excalibur Mineral Corp. Google Search for Schollhornite Exceptional Minerals Google Search for Schollhornite John Betts Fine Minerals Search for Schollhornite McDougall Minerals Google Search for Schollhornite Mineral News Website Link Rock and Mineral Shows Google Search for Schollhornite Weinrich Minerals, Inc. Google Search for Schollhornite Ask about Schollhornite here : Print or Cut-and-Paste your Schollhornite Specimen Label here :
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