[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery] John Betts - Fine Minerals Classic minerals, out-of-print books & magazines, plus informative articles for collectors General Pyroxmangite Information(Mn,Fe++)SiO3 |
Molecular Weight = 131.20 gm |
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Manganese 33.50 % Mn 43.25 % MnO |
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Iron 8.51 % Fe 10.95 % FeO |
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Silicon 21.41 % Si 45.79 % SiO2 |
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Oxygen 36.58 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
Mn2+0.8Fe2+0.2SiO3 |
Metamorphic and contact metasomatism of Mn-bearing rocks. Forms a series with pyroxferroite |
Valid Species (Pre-IMA) 1913 |
Tunaberg, Sweden. Link to MinDat.org Location Data. |
Named after its resemblance to the pyroxenes and containing manganese. |
Pyroxmangite + Pronunciation |
ICSD 34159 |
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PDF 29-895 |
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Pyroxmangite Crystallographya:b:c =0.8886:1:2.298 |
a = 6.721, b = 7.563, c = 17.38, Z = 14; alpha = 113.17°, beta = 82.27°, gamma = 94.13° V = 802.71 Den(Calc)= 3.80 |
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 |
By Intensity(I/Io): 2.95(1), 2.18(0.7), 3.12(0.6), |
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| Physical Properties of Pyroxmangite{110} Perfect, {110} Perfect |
Pink, Rose pink, Purplish pink, Yellowish red brown, Brown. |
3.8 |
Transparent to translucent |
Massive - Granular - Common texture observed in granite and other igneous rock. |
Massive - Uniformly indistinguishable crystals forming large masses. |
5.5-6 - Knife Blade-Orthoclase |
Non-fluorescent. |
Vitreous - Pearly |
Magnetic after heating |
white |
| Optical Properties of PyroxmangiteCI meas= 0.027 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1961,KPDmeas= 0.1956,KC= 0.2011 Ncalc = 1.76 Biaxial (+), a=1.726-1.748, b=1.728-1.75, g=1.744-1.764, bire=0.0160-0.0180, 2V(Calc)=40-42, 2V(Meas)=35-46. Dispersion r > v moderate. |
| Calculated Properties of PyroxmangiteBulk Density (Electron Density)=3.65 gm/cc |
note: Specific Gravity of Pyroxmangite =3.79 gm/cc. Fermion Index = 0.01 |
Boson Index = 0.99 PEPyroxmangite = 11.99 barns/electron |
U=PEPyroxmangite x rElectron Density= 43.78 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Pyroxmangite is Not Radioactive | Pyroxmangite Classification65.06.01.01 (65)Inosilicate Single-Width Unbranched Chains, W=1 |
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(65.06)with chains P=7 |
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(65.06.01)Pyroxmangite group |
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09.DO.05 09 - SILICATES (Germanates) |
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09.D - Inosilicates* Structural terminology according to Liebau (1985) |
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09.DO -Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains |
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| Other Pyroxmangite InformationNAME( Duda&Rejl90) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
Links to other databases for Pyroxmangite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Franklin Minerals(Dunn) 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - HyperPhysics 11 - MinDAT 12 - MinMax(Deutsch) 13 - MinMax(English) 14 - Mineral and Gemstone Kingdom 15 - Mineralienatlas (Deutsch) 16 - QUT Mineral Atlas 17 - Ruff.Info 18 - University of Colorado - Mineral Structure Data 19 - WWW-MINCRYST Search for Pyroxmangite using: Visit our Advertisers for Pyroxmangite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Pyroxmangite Mineral Data : Ask about Pyroxmangite here : Print or Cut-and-Paste your Pyroxmangite Specimen Label here :
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