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Whiteite-(MnFeMg) Mineral Data |
General Whiteite-(MnFeMg) Information |
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(Mn++,Ca)(Fe++,Mn++)Mg2Al2(PO4)4(OH)2•8(H2O) | ||
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Molecular Weight = 767.44 gm | ||
Calcium 1.31 % Ca 1.83 % CaO | |||
Magnesium 6.33 % Mg 10.50 % MgO | |||
Manganese 7.16 % Mn 9.24 % MnO | |||
Aluminum 7.03 % Al 13.29 % Al2O3 | |||
Iron 5.46 % Fe 7.02 % FeO | |||
Phosphorus 16.14 % P 36.99 % P2O5 | |||
Hydrogen 2.36 % H 21.13 % H2O | |||
Oxygen 54.20 % O | |||
______ ______ | |||
100.00 % 100.00 % = TOTAL OXIDE | |||
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Mn2+0.75Ca0.25Fe2+0.75Mn2+0.25Mg2Al2(PO4)4(OH)2�8(H2O) | ||
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In pegmatites. | ||
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Approved IMA 1978 | ||
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Ilha de Taquaral, Minas Gerias, Brazil. Link to MinDat.org Location Data. | ||
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Named for John S. White, Jr. (1933-), former editor of the Mineralogical Record and professional curator of minerals and gems. | ||
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Whiteite-(MnFeMg) ![]() |
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Whiteite-(MnFeMg) Image | |||
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Whiteite-(MnFeMg) Crystallography |
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a:b:c =2.1537:1:1.4568 | ||
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a = 14.99, b = 6.96, c = 10.14, Z = 2; beta = 113.32° V = 971.49 Den(Calc)= 2.62 | ||
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Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/a | ||
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By Intensity(I/Io): 9.32(1), 2.78(0.9), 2.95(0.5),4.82(0.5), 3.25(0.4), 3.52(0.4), 1.64(0.4), 5.6(0.3), | ||
Physical Properties of Whiteite-(MnFeMg) |
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{???} Good | ||
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Chocolate brown. | ||
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2.63 - 2.67, Average = 2.65 | ||
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Transparent | ||
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Aggregates - Made of numerous individual crystals or clusters. | ||
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4 - Fluorite | ||
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Vitreous (Glassy) | ||
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brownish white | ||
Optical Properties of Whiteite-(MnFeMg) |
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CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2233,KPDmeas= 0.2208,KC= 0.2233 Ncalc = 1.58 - 1.6 |
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Biaxial (+), a=1.58, b=1.584-1.585, g=1.59-1.591, bire=0.0100-0.0110 | ||
Calculated Properties of Whiteite-(MnFeMg) |
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Bulk Density (Electron Density)=2.63 gm/cc note: Specific Gravity of Whiteite-(MnFeMg) =2.62 gm/cc. |
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Fermion Index = 0.0077724659 Boson Index = 0.9922275341 |
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PEWhiteite-(MnFeMg) = 4.67 barns/electron U=PEWhiteite-(MnFeMg) x rElectron Density= 12.30 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Whiteite-(MnFeMg) is Not Radioactive |
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Whiteite-(MnFeMg) Classification |
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42.11.03.02 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen | ||
(42.11)where (AB)4 (XO4)3 Zq � x(H2O) | |||
(42.11.03)Whiteite Group | |||
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08.DH.15 08 - PHOSPHATES, ARSENATES, VANADATES | ||
08.D - Phosphates, etc | |||
08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1 | |||
Other Whiteite-(MnFeMg) Information |
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NAME( Dana8) PHYS. PROP.(Dana8) | ||
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Links to other databases for Whiteite-(MnFeMg) : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Whiteite-(MnFeMg) using: Visit our Advertisers for Whiteite-(MnFeMg) : Ask about Whiteite-(MnFeMg) here : Print or Cut-and-Paste your Whiteite-(MnFeMg) Specimen Label here :
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