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Indialite Mineral Data + |
General Indialite Information |
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| Mg2Al4Si5O18 | |||
| Molecular Weight = 584.95 gm | |||
| Magnesium 8.31 % Mg 13.78 % MgO | |||
| Aluminum 18.45 % Al 34.86 % Al2O3 | |||
| Silicon 24.01 % Si 51.36 % SiO2 | |||
| Oxygen 49.23 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Mg2Al4Si5O18 | |||
| Formed by fusion and recrystallization of sedimentary rocks as a result of the burning of underlying coal seams. High temperature polymorph of cordierite. | |||
| Valid Species (Pre-IMA) 1954 | |||
| Bokaro coal seam, southwest of Hazaribagh, Bihar, India. Link to MinDat.org Location Data. | |||
| Named for the locality | |||
| ICSD 200127 | |||
| PDF 13-293 | |||
Indialite Image | |||
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Indialite Crystallography |
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| a:c = 1:0.95301 | |||
| a = 9.812, c = 9.351, Z = 2; V = 779.66 Den(Calc)= 2.49 | |||
| Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6/mcc | |||
| By Intensity(I/Io): 8.48(1), 3.037(0.55), 4.096(0.55), | |||
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Physical Properties of Indialite |
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| None | |||
| Colorless, Pale mauve. | |||
| 2.51 | |||
| Transparent | |||
| Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). | |||
| Hexagonal - Six-sided crystal shape in cross-section or habit. | |||
| Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | |||
| 7-7.5 - Quartz-Garnet | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Indialite |
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| none. | |||
| none. | |||
| CI meas= -0.033 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.042 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2152,KPDmeas= 0.2134,KC= 0.2065 |
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| Uniaxial (-), e=1.532-1.535, w=1.537-1.539, bire=0.0040-0.0050. | |||
Calculated Properties of Indialite |
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relectron=2.49 gm/cc |
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| Fermion Index = 0.01975 Boson Index = 0.98025 |
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PEIndialite = 1.65 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Indialite is Not Radioactive |
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Indialite Classification |
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| 61.1.1.3 (61)Cyclosilicate Six-Membered Rings | |||
| (61.1)with [Si6O18] rings; possible (OH) and Al substitution | |||
| (61.1.1)Beryl group | |||
| VIII/E.12-30 VIII - Silicates | |||
| VIII/E - Cyklosilicates, six rings [Si6O18]12- | |||
| VIII/E.12 - Beryl series | |||
Other Indialite Information |
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| NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2) | |||
| Links to other databases for Indialite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris Search for Indialite using: Visit our Advertisers for Indialite : Translate Indialite Mineral Data : Ask about Indialite here : Print or Cut-and-Paste your Indialite Specimen Label here :
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