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Sinhalite Mineral Data + |
General Sinhalite Information |
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| MgAlBO4 | |||
| Molecular Weight = 126.09 gm | |||
| Magnesium 19.28 % Mg 31.96 % MgO | |||
| Aluminum 21.40 % Al 40.43 % Al2O3 | |||
| Boron 8.57 % B 27.61 % B2O3 | |||
| Oxygen 50.75 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| MgAl(BO4) | |||
| Valid Species (Pre-IMA) 1952 | |||
| Link to MinDat.org Location Data. | |||
| ICSD 75942 | |||
| PDF 25-1379 | |||
Sinhalite Image | |||
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Sinhalite Crystallography |
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| a:b:c =0.4385:1:0.5751 | |||
| a = 4.328, b = 9.868, c = 5.676, Z = 4; V = 242.41 Den(Calc)= 3.45 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbmm | |||
| By Intensity(I/Io): 2.14(1), 1.62(0.9), 3.24(0.7), | |||
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Physical Properties of Sinhalite |
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| Brown, Brown pink, Colorless, Yellow, Light pink. | |||
| 3.475 - 3.5, Average = 3.48 | |||
| Transparent | |||
| 6.5-7 - Pyrite-Quartz | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Sinhalite |
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| CI meas= 0.028 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2034,KPDmeas= 0.2012,KC= 0.207 |
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| Biaxial (?), b=1.6969, g=1.7065, , 2V(Meas)=56. | |||
Calculated Properties of Sinhalite |
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relectron=3.39 gm/cc |
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| Fermion Index = 0.03657 Boson Index = 0.96343 |
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PESinhalite = 1.14 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Sinhalite is Not Radioactive |
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Sinhalite Classification |
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| 24.1.1.1 (24)Borates - Anhydrous | |||
| (24.1)where (A)2 XO4 | |||
| (24.1.1)Dana Group | |||
| V/G.07-10 V - Nitrates, Carbonates and Borates | |||
| V/G - "Insel" borates [BO4]5- tetraheders | |||
| V/G.07 - Sinhalite - Behierite series | |||
Other Sinhalite Information |
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| PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Sinhalite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - Tradeshop.com - The Rainbow of Gems 14 - WWW-MINCRYST 15 -École des Mines de Paris Search for Sinhalite using: Visit our Advertisers for Sinhalite : Translate Sinhalite Mineral Data : Ask about Sinhalite here : Print or Cut-and-Paste your Sinhalite Specimen Label here :
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