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Pyroxferroite Mineral Data |
General Pyroxferroite Information |
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(Fe++,Mn)7[Si7O21] | ||
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Molecular Weight = 922.61 gm | ||
Manganese 5.95 % Mn 7.69 % MnO | |||
Iron 36.32 % Fe 46.72 % FeO | |||
Silicon 21.31 % Si 45.59 % SiO2 | |||
Oxygen 36.42 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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Fe2+6Mn2+Si7O21 | ||
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Gabbroic rocks. Forms a series with pyroxmangite. | ||
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Approved IMA 1970 | ||
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Sea of Tranquility, Moon and Isanago mine, Kyoto Prefecture, Japan. Link to MinDat.org Location Data. | ||
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Named after its resemblance to the pyroxenes and containing iron over manganese.. | ||
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Pyroxferroite + Pronunciation ![]() |
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Pyroxferroite Image | |||
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Pyroxferroite Crystallography |
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a:b:c =0.8769:1:2.298 | ||
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a = 6.632, b = 7.563, c = 17.38, Z = 1.2; alpha = 114.31°, beta = 82.75°, gamma = 94.58° V = 785.58 Den(Calc)= 2.34 | ||
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Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 | ||
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By Intensity(I/Io): 2.934(1), 2.674(0.6), 3.09(0.45), | ||
Physical Properties of Pyroxferroite |
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{110} Perfect, {010} Poor, {001} Poor | ||
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Colorless, Yellow, Orange, Pink orange. | ||
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3.68 - 3.76, Average = 3.72 | ||
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Transparent to Translucent | ||
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4.5-5.5 - Near Apatite | ||
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Vitreous (Glassy) | ||
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white | ||
Optical Properties of Pyroxferroite |
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CI meas= -0.029 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.642 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.3249,KPDmeas= 0.2035,KC= 0.1978 Ncalc = 1.46 - 1.74 |
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Biaxial (+), a=1.746-1.756, b=1.75-1.758, g=1.764-1.768, bire=0.0120-0.0180, 2V(Calc)=50-58, 2V(Meas)=30-40. | ||
Calculated Properties of Pyroxferroite |
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Bulk Density (Electron Density)=3.60 gm/cc note: Specific Gravity of Pyroxferroite =3.72 gm/cc. |
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Fermion Index = 0.01 Boson Index = 0.99 |
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PEPyroxferroite = 13.24 barns/electron U=PEPyroxferroite x rElectron Density= 47.72 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Pyroxferroite is Not Radioactive |
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Pyroxferroite Classification |
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65.06.01.02 (65)Inosilicate Single-Width Unbranched Chains, W=1 | ||
(65.06)with chains P=7 | |||
(65.06.01)Pyroxmangite group | |||
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09.DO.05 09 - SILICATES (Germanates) | ||
09.D - Inosilicates* Structural terminology according to Liebau (1985) | |||
09.DO -Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains | |||
Other Pyroxferroite Information |
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NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | ||
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Links to other databases for Pyroxferroite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Pyroxferroite using: Visit our Advertisers for Pyroxferroite : Ask about Pyroxferroite here : Print or Cut-and-Paste your Pyroxferroite Specimen Label here :
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