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Mendozavilite Mineral Data + |
General Mendozavilite Information |
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| (Na,Mg)Ca2[Mo++++++8P+++++2Fe+++3O36(OH)]·n(H2O), n~9 | |||
| Molecular Weight = 1,847.68 gm | |||
| Sodium 0.75 % Na 1.01 % Na2O | |||
| Strontium 0.47 % Sr 0.56 % SrO | |||
| Calcium 3.69 % Ca 5.16 % CaO | |||
| Magnesium 0.26 % Mg 0.44 % MgO | |||
| Iron 9.07 % Fe 12.96 % Fe2O3 | |||
| Molybdenum 41.54 % Mo 62.32 % MoO3 | |||
| Phosphorus 3.35 % P 7.68 % P2O5 | |||
| Hydrogen 1.04 % H 9.26 % H2O | |||
| Oxygen 39.83 % O | |||
| ______ ______ | |||
| 100.00 % 99.39 % = TOTAL OXIDE | |||
| Na0.6Mg0.2Ca1.7Sr0.1Mo8P2Fe3+3O36(OH)·9(H2O) | |||
| Mo-rich pegmatite. | |||
| Approved IMA 1986 | |||
| Cumobabi molybdenum deposit, SW of Cumpas, Sonora, Mexico. Link to MinDat.org Location Data. | |||
| Named for H. Mendoza Avila, Mexican geologist, who found the mineral. | |||
Mendozavilite Image | |||
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Mendozavilite Crystallography |
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| a:b:c =1.7216:1:1.372 | |||
| a = 18.952, b = 11.008, c = 15.103, Z = 3; beta = 129.89° V = 2,417.57 Den(Calc)= 3.81 | |||
| MonoclinicSpace Group: Unk. | |||
| By Intensity(I/Io): 8.81(1)(111,110), 11.51(0.56)(001), 9.56(0.31)(201),3.65(0.19)(221,400), 2.993(0.17)(222), 3.12(0.16)(113), 4.37(0.16)(220), | |||
Physical Properties of Mendozavilite |
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| Yellow, Orange. | |||
| 3.85 | |||
| Transparent to Translucent | |||
| Massive - Granular - Common texture observed in granite and other igneous rock. | |||
| 1.5 - Between Talc and Gypsum | |||
| Non-fluorescent. | |||
| Vitreous (Glassy) | |||
| light yellow | |||
Optical Properties of Mendozavilite |
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| CI meas= 0.202 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.193 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2004,KPDmeas= 0.1984,KC= 0.2485 |
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| Biaxial (+), a=1.762, b=1.763, g=1.766, bire=0.0040, 2V(Calc)=62, 2V(Meas)=5-15. Dispersion very strong, r > v. | |||
| colorless. | |||
| pale yellow. | |||
| pale yellow. | |||
Calculated Properties of Mendozavilite |
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relectron=3.62 gm/cc |
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| Fermion Index = 0.10856 Boson Index = 0.89144 |
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PEMendozavilite = 70.87 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mendozavilite is Not Radioactive |
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Mendozavilite Classification |
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| 49.4.5.1 (49)Basic and Hydrated Molybdates and Tungstates | |||
| (49.4)(Compound Anions) | |||
| (49.4.5)Dana Group | |||
| VII/D.57-10 VII - Phosphates, Arsenates and Vanadates | |||
| VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K | |||
| VII/D.57 - Mendozavilite - Paramendozavilite series | |||
Other Mendozavilite Information |
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| NAME( Dana8) PHYS. PROP.(AmMin, Vol 88, p 478) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Mendozavilite : 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 Mendozavilite using: Visit our Advertisers for Mendozavilite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Mendozavilite Mineral Data : Ask about Mendozavilite here : Print or Cut-and-Paste your Mendozavilite Specimen Label here :
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