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Ferrosilite Mineral Data + |
General Ferrosilite Information |
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| (Fe++,Mg)2Si2O6 | |||
| Molecular Weight = 232.32 gm | |||
| Magnesium 10.46 % Mg 17.35 % MgO | |||
| Iron 24.04 % Fe 30.93 % FeO | |||
| Silicon 24.18 % Si 51.73 % SiO2 | |||
| Oxygen 41.32 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Fe2+MgSi2O6 | |||
| Found in basic and ultrabasic igneous rocks. | |||
| Valid Species (Pre-IMA) 1935 | |||
| Unspecified locality in Russia. Link to MinDat.org Location Data. | |||
| Named for its composition (Ferrous Silicate). | |||
| ICSD 17055 | |||
| Orthoferrosilite | |||
| PDF 29-721 | |||
Ferrosilite Image | |||
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Ferrosilite Crystallography |
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| a:b:c =2.0288:1:0.5768 | |||
| a = 18.418, b = 9.078, c = 5.237, Z = 8; V = 875.62 Den(Calc)= 3.52 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bca | |||
| By Intensity(I/Io): 2.91(1), 4.61(0.9), 3(0.8),3.23(0.7), 2.59(0.4), 2.52(0.3), 6.46(0.3), 1.781(0.2), | |||
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Physical Properties of Ferrosilite |
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| [210] Good, [100] Parting | |||
| Colorless, Green, Dark brown, Nearly black. | |||
| 3.88 - 4.02, Average = 3.95 | |||
| Translucent to Opaque | |||
| Anhedral Grains - Granular minerals without the expression of crystal shapes | |||
| 5-6 - Between Apatite and Orthoclase | |||
| Vitreous (Glassy) | |||
| pale brownish gray | |||
Optical Properties of Ferrosilite |
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| CI meas= 0.056 (Good) - where the CI = (1-KPDmeas/KC) CI calc= -0.059 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2123,KPDmeas= 0.1892,KC= 0.2004 |
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| Biaxial (+), a=1.71-1.767, b=1.723-1.77, g=1.726-1.788, bire=0.0160-0.0210 | |||
| pinkish brown. | |||
| greenish brown. | |||
Calculated Properties of Ferrosilite |
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relectron=3.88 gm/cc |
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| Fermion Index = 0.02704 Boson Index = 0.97296 |
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PEFerrosilite = 8.29 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ferrosilite is Not Radioactive |
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Ferrosilite Classification |
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| 65.1.2.2 (65)Inosilicate Single-Width Unbranched Chains, W=1 | |||
| (65.1)with chains P=2 | |||
| (65.1.2)Orthopyroxenes | |||
| VIII/F.02-20 VIII - Silicates | |||
| VIII/F - Inosilicates (chain and band) double chains [Si2O6]4- | |||
| VIII/F.02 - Pyroxene group, Orthopyroxene | |||
Other Ferrosilite Information |
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| NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Ferrosilite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 -University of Colorado - Mineral Structure Data 15 - WWW-MINCRYST 16 -École des Mines de Paris Search for Ferrosilite using: Visit our Advertisers for Ferrosilite : 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 Ferrosilite Mineral Data : Ask about Ferrosilite here : Print or Cut-and-Paste your Ferrosilite Specimen Label here :
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