|
Ferrosilite Mineral Data + |
General Ferrosilite Information |
|||
| (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 | |||
|
|
|
||
Ferrosilite Crystallography |
|||
| 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), | |||
|
Mouse |
| ||
Physical Properties of Ferrosilite |
|||
| [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 |
|||
| 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 |
|||
| 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 |
|||
relectron=3.88 gm/cc |
|||
| Fermion Index = 0.02704 Boson Index = 0.97296 |
|||
PEFerrosilite = 8.29 barns/electron |
|||
| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ferrosilite is Not Radioactive |
|||
Ferrosilite Classification |
|||
| 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 |
|||
| NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Ferrosilite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 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 - Ruff.Info 15 - University of Colorado - Mineral Structure Data 16 - WWW-MINCRYST Search for Ferrosilite using: Visit our Advertisers for Ferrosilite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich 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 The GeoZone Wrights Rock Shop Translate Ferrosilite Mineral Data : Ask about Ferrosilite here : Print or Cut-and-Paste your Ferrosilite Specimen Label here :
|
|||