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Beusite Mineral Data + |
General Beusite Information |
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| (Mn++,Fe++,Ca,Mg)3(PO4)2 | |||
| Molecular Weight = 344.81 gm | |||
| Calcium 3.49 % Ca 4.88 % CaO | |||
| Magnesium 1.41 % Mg 2.34 % MgO | |||
| Manganese 28.68 % Mn 37.03 % MnO | |||
| Iron 11.34 % Fe 14.59 % FeO | |||
| Phosphorus 17.97 % P 41.17 % P2O5 | |||
| Oxygen 37.12 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Mn2+1.8Fe2+0.7Ca0.3Mg0.2(PO4)2 | |||
| Late-stage accessory mineral in complex granite pegmatites and as euhedral inclusions in troilite nodules in an iron meteorite. | |||
| Approved IMA 1968 | |||
| Los Aleros pegmatite, Argentina. Link to MinDat.org Location Data. | |||
| Named for Alexey Alexandrovich Beus, Professor of Mineralogy and Geochemistry, Moscow Polytechnical Institute. | |||
| ICSD 71051 | |||
| PDF 36-401 | |||
Beusite Image | |||
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Beusite Crystallography |
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| a:b:c =0.7621:1:0.5338 | |||
| a = 8.78, b = 11.52, c = 6.15, Z = 4; beta = 99.42° V = 613.66 Den(Calc)= 3.73 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | |||
| By Intensity(I/Io): 2.863(1), 3.49(1), 2.708(0.6), | |||
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Mouse |
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Physical Properties of Beusite |
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| [010] Good, [100] Distinct | |||
| Reddish brown. | |||
| 3.6 - 3.7, Average = 3.65 | |||
| Translucent | |||
| Lamellar - Thin laminae producing a lamellar structure. | |||
| Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | |||
| 5 - Apatite | |||
| Vitreous (Glassy) | |||
| light pink | |||
Optical Properties of Beusite |
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| CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1883,KPDmeas= 0.1925,KC= 0.1906 |
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| Biaxial (+), a=1.685-1.708, b=1.688-1.711, g=1.7-1.723, bire=0.0150, 2V(Calc)=54, 2V(Meas)=25. Dispersion r > v strong. | |||
Calculated Properties of Beusite |
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relectron=3.51 gm/cc |
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| Fermion Index = 0.00403 Boson Index = 0.99597 |
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PEBeusite = 12.15 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Beusite is Not Radioactive |
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Beusite Classification |
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| 38.3.3.2 (38)Anhydrous Phosphates, etc | |||
| (38.3)(A+ B++)3 (XO4)2 | |||
| (38.3.3)Dana Group | |||
| VII/A.04-30 VII - Phosphates, Arsenates and Vanadates | |||
| VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions. cations of medium size: Mostly Fe, Mn | |||
| VII/A.04 - Sarcopside - Beusite series | |||
Other Beusite Information |
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| NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic4) | |||
| Links to other databases for Beusite : 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 - WWW-MINCRYST 13 -École des Mines de Paris Search for Beusite using: Visit our Advertisers for Beusite : Translate Beusite Mineral Data : Ask about Beusite here : Print or Cut-and-Paste your Beusite Specimen Label here :
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