General Westerveldite Information Chemical Formula: |
(Fe,Ni,Co)As |
Composition: |
Molecular Weight = 131.93 gm |
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Iron 25.40 % Fe |
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Cobalt 4.47 % Co |
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Nickel 13.35 % Ni |
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Arsenic 56.79 % As |
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100.00 % |
Empirical Formula: |
Fe2+0.6Ni0.3Co0.1As |
Environment: |
As minute inclusions in maucherite which occurs in chromite-nickeline ores. |
IMA Status: |
Approved IMA 1972 |
Locality: |
La Gallega mine, 3 km west of Ojen, Marbella Province, Málaga, Spain. Link to MinDat.org Location Data. |
Name Origin: |
Named for Jan Westerveld (1905-1962), Professor of Geology and Mineralogy, University of Amsterdam, The Netherlands. |
Name Pronunciation: |
Westerveldite + Pronunciation |
Synonym: |
ICSD 30413 |
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PDF 12-799 |
| | Westerveldite Image
Images:
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Westerveldite Crystallography Axial Ratios: |
a:b:c =0.5789:1:0.8929 |
Cell Dimensions: |
a = 3.457, b = 5.971, c = 5.332, Z = 4; V = 110.06 Den(Calc)= 7.96 |
Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnam |
X Ray Diffraction: |
By Intensity(I/Io): 2.604(1), 1.988(0.5), 2.083(0.25), |
Crystal Structure:
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| Physical Properties of Westerveldite Color: |
Brownish white, Gray. |
Diaphaneity: |
Opaque |
Habit: |
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. |
Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
Hardness: |
5.5-6 - Knife Blade-Orthoclase |
Luster: |
Metallic |
| Optical Properties of Westerveldite RL Anisotrophism: |
Distinct in air, orange brown and bluish in oil. |
RL Pleochroism: |
Distinct. |
Reflectivity |
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| Calculated Properties of Westerveldite Electron Density: |
Bulk Density (Electron Density)=7.20 gm/cc |
note: Specific Gravity of Westerveldite =7.96 gm/cc. Fermion Index: |
Fermion Index = 0.0068925348 |
Boson Index = 0.9931074652 Photoelectric: |
PEWesterveldite = 55.89 barns/electron |
U=PEWesterveldite x rElectron Density= 402.62 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Westerveldite is Not Radioactive | Westerveldite Classification Dana Class: |
02.08.19.01 (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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(02.08.19)Dana Group |
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Strunz Class: |
02.CC.15 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.CC -With Ni, Fe, Co, PGE, etc. |
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| Other Westerveldite Information References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
See Also: |
Links to other databases for Westerveldite : |
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 Westerveldite using: Visit our Advertisers for Westerveldite : A Bijoux Google Search for WestervelditeAdam's Minerals Google Search for Westerveldite Cape Minerals Google Search for Westerveldite Dakota Matrix Minerals Google Search for Westerveldite Excalibur Mineral Corp. Google Search for Westerveldite Exceptional Minerals Google Search for Westerveldite John Betts Fine Minerals Search for Westerveldite McDougall Minerals Google Search for Westerveldite Mineral News Website Link Rock and Mineral Shows Google Search for Westerveldite Weinrich Minerals, Inc. Google Search for Westerveldite Ask about Westerveldite here : Print or Cut-and-Paste your Westerveldite Specimen Label here :
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