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Burangaite Mineral Data + |
General Burangaite Information |
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| (Na,Ca)2(Fe++,Mg)2Al10(PO4)8(OH,O)12·4(H2O) | |||
| Molecular Weight = 738.18 gm | |||
| Sodium 2.18 % Na 2.94 % Na2O | |||
| Calcium 1.63 % Ca 2.28 % CaO | |||
| Magnesium 1.32 % Mg 2.18 % MgO | |||
| Aluminum 18.28 % Al 34.53 % Al2O3 | |||
| Iron 6.05 % Fe 6.81 % FeO / 1.08 % Fe2O3 | |||
| Phosphorus 16.78 % P 38.46 % P2O5 | |||
| Hydrogen 1.31 % H 11.71 % H2O | |||
| Oxygen 52.45 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Na0.7Ca0.3Fe2+0.7Mg0.4Al5Fe3+0.1(PO4)4(OH)5.6O0.6·2(H2O) | |||
| Corroded aggregates with other phosphates in a zoned granite pegmatite. | |||
| Approved IMA 1977 | |||
| Buranga pegmatite, near Gatumba, Rwanda. Link to MinDat.org Location Data. | |||
| Named for the locality. | |||
| ICSD 84627 | |||
| PDF 29-1190 | |||
Search for Burangaite Images | |||
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Burangaite Crystallography |
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| a:b:c =4.9702:1:2.6644 | |||
| a = 25.09, b = 5.048, c = 13.45, Z = 4; beta = 110.91° V = 1,591.31 Den(Calc)= 3.08 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c | |||
| By Intensity(I/Io): 11.71(1), 3.081(0.9), 3.115(0.7), | |||
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Physical Properties of Burangaite |
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| [100] Perfect | |||
| Blue, Greenish blue. | |||
| 3.05 | |||
| Semitransparent | |||
| Bladed - Aggregates of thin lath-like crystals (e.g. kyanite). | |||
| Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | |||
| 5 - Apatite | |||
| light blue | |||
Optical Properties of Burangaite |
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| Biaxial (-), a=1.611, b=1.635, g=1.643, bire=0.0320, 2V(Calc)=58, 2V(Meas)=58. | |||
| light blue. | |||
| dark blue. | |||
| colorless. | |||
Calculated Properties of Burangaite |
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relectron=3.07 gm/cc |
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| Fermion Index = 0.00287 Boson Index = 0.99713 |
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PEBurangaite = 3.39 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Burangaite is Not Radioactive |
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Burangaite Classification |
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| 42.9.1.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen | |||
| (42.9)where (A)3 (XO4)2 Zq · x(H2O) | |||
| (42.9.1)Dana Group | |||
| VII/D.11-120 VII - Phosphates, Arsenates and Vanadates | |||
| VII/D - Water-bearing phosphates with unfamiliar anions, cations of medium size: Cu, Zn, Mn, Al, Fe | |||
| VII/D.11 - Strunzite series | |||
Other Burangaite Information |
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| NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic4) | |||
| Links to other databases for Burangaite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Burangaite using: Visit our Advertisers for Burangaite : AA Mineral SpecimensB & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks 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 Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Burangaite Mineral Data : Ask about Burangaite here : Print or Cut-and-Paste your Burangaite Specimen Label here :
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