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Arrojadite-(PbFe) Mineral Data |
General Arrojadite-(PbFe) Information |
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PbFe++Na2Ca(Fe++,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 | |
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Molecular Weight = 2,242.59 gm | |
Sodium 2.05 % Na 2.76 % Na2O | ||
Calcium 1.79 % Ca 2.50 % CaO | ||
Magnesium 1.08 % Mg 1.80 % MgO | ||
Manganese 9.80 % Mn 12.65 % MnO | ||
Aluminum 1.20 % Al 2.27 % Al2O3 | ||
Iron 22.41 % Fe 28.83 % FeO | ||
Phosphorus 16.57 % P 37.98 % P2O5 | ||
Hydrogen 0.11 % H 1.00 % H2O | ||
Lead 9.24 % Pb 9.95 % PbO | ||
Oxygen 35.31 % O | ||
Fluorine 0.42 % F 0.42 % F | ||
- % F -0.18 % -O=F2 | ||
______ ______ | ||
100.00 % 100.00 % = TOTAL OXIDE | ||
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PbFe2+Na2CaFe2+8Mn2+4MgAl(PO4)11(PO3OH)(OH)1.5F0.5 | |
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Occurred with walnut-sized black grains of metamict � llowite. Arrojadite group | |
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Approved IMA 2005 (Dana # Added) | |
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Sapucaia pegmatite, Galilea, Rio Doce basin, Minas Gerais, Brazil Link to MinDat.org Location Data. | |
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Named after arrojadite and site occupancy of the arrojadite structure. | |
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Arrojadite-(PbFe) + Pronunciation ![]() |
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IMA2005-056 | |
Arrojadite-(PbFe) Crystallography |
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a:b:c =1.6472:1:2.4649 | |
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a = 16.4304, b = 9.9745, c = 24.5869, Z = 4; beta = 105.485° V = 3,883.16 Den(Calc)= 3.84 | |
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Monoclinic - Domatic H-M Symbol (m) Space Group: Cc | |
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By Intensity(I/Io): 3.0186(1), 2.6982(0.548), 3.2082(0.431),2.8291(0.35), 2.8196(0.329), 2.6941(0.323), 2.5376(0.304), 2.7496(0.291), 2.8132(0.287), | |
Physical Properties of Arrojadite-(PbFe) |
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Pale honey. | |
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Transparent | |
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Granular - Generally occurs as anhedral to subhedral crystals in matrix. | |
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4-5 - Fluorite-Apatite | |
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Vitreous (Glassy) | |
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white | |
Optical Properties of Arrojadite-(PbFe) |
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CI calc= 0.064 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1724,KC= 0.1843 Ncalc = 1.71 |
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Biaxial (+), a=1.6585, b=1.66, g=1.668, bire=0.0095, 2V(Calc)=48, 2V(Meas)=57.5. Dispersion r > v. | |
Calculated Properties of Arrojadite-(PbFe) |
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Bulk Density (Electron Density)=3.65 gm/cc note: Specific Gravity of Arrojadite-(PbFe) =3.84 gm/cc. |
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Fermion Index = 0.02 Boson Index = 0.98 |
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PEArrojadite-(PbFe) = 159.73 barns/electron U=PEArrojadite-(PbFe) x rElectron Density= 583.10 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Arrojadite-(PbFe) is Not Radioactive |
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Arrojadite-(PbFe) Classification |
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41.07.02a.07 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen | |
(41.07)where (A B)m (XO4)4 Zq | ||
(41.07.02a)Arrojadite Group (Arrojadite Subgroup) (Al in Al site, OH in W site, Fe in M site) | ||
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08.BF.05 08 - PHOSPHATES, ARSENATES, VANADATES | |
08.B - Phosphates, etc. with Additional Anions, without H2O | ||
08.BF -With medium-sized and large cations, (OH, etc.):RO4 < 0.5:1 | ||
Other Arrojadite-(PbFe) Information |
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NAME( AmMin, v91, p1270) PHYS. PROP.(AmMin, v91, p1270) OPTIC PROP.(AmMin, v91, p1270) | |
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Links to other databases for Arrojadite-(PbFe) : 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 Arrojadite-(PbFe) using: Visit our Advertisers for Arrojadite-(PbFe) : Ask about Arrojadite-(PbFe) here : Print or Cut-and-Paste your Arrojadite-(PbFe) Specimen Label here :
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