[Newest Minerals] [Equipment] [Analytical Services] [About Us] [Mineral Gallery] [eBay Store] See Also: [Diamond Crystals] [Mineral News] [Hudson Institute] [Minerals on CDROM] Rare Minerals, Meteorites, Equipment and Analytical Services Excalibur Mineral Company, World leaders in the supply of rare species Serving the scientific and collector communities since 1974 General Meymacite InformationWO3•2(H2O) |
Molecular Weight = 267.88 gm |
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Hydrogen 1.51 % H 13.45 % H2O |
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Tungsten 68.63 % W 86.55 % WO3 |
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Oxygen 29.86 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
WO3•2(H2O) |
Alteration product of scheelite. Highly questionalble species. |
Approved IMA 1961 |
Meymac, Correze, France. Link to MinDat.org Location Data. |
Named for the locality. |
Meymacite + Pronunciation |
ferritungstite |
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Meymacite Crystallography Amorphous- No Crystals |
| Physical Properties of MeymaciteNone |
Yellow brown. |
3.94 - 4.1, Average = 4.01 |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
Vitreous - Resinous |
brownish yellow |
| Optical Properties of Meymacite NCalc= 1.78 - from Gladstone-Dale relationship (KC = 0.1937) where Ncalc=Dmeas*KC+1 |
| Calculated Properties of MeymaciteBulk Density (Electron Density)=3.54 gm/cc |
note: Specific Gravity of Meymacite =4.02 gm/cc. Fermion Index = 0.09 |
Boson Index = 0.91 PEMeymacite = 840.62 barns/electron |
U=PEMeymacite x rElectron Density=2,977.16 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Meymacite is Not Radioactive | Meymacite Classification04.05.03.01 (04)Simple Oxides |
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(04.05)with a cation charge of 6+ (A++++++ O3) |
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(04.05.03)Dana Group |
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04.FJ.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.F - Hydroxides (without V or U) |
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04.FJ -Hydroxides with H2O ± (OH); corner-sharing octahedra |
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| Other Meymacite InformationNAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
Links to other databases for Meymacite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Meymacite using: Visit our Advertisers for Meymacite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Diamond Dan Publications Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Meymacite Mineral Data : Ask about Meymacite here : Print or Cut-and-Paste your Meymacite Specimen Label here :
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