[Mineral Auctions] [Register] [Current Auctions] [Log In] [www.danweinrich.com] Dan Weinrich Auctions Specializing In Live Weekly Auctions Of Top Quality Mineral Specimens The Place To Find Great Specimens At Great Prices! General Magnesiocarpholite InformationMgAl2Si2O6(OH)4 |
Molecular Weight = 298.46 gm |
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Magnesium 8.14 % Mg 13.50 % MgO |
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Aluminum 18.08 % Al 34.16 % Al2O3 |
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Silicon 18.82 % Si 40.26 % SiO2 |
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Hydrogen 1.35 % H 12.07 % H2O |
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Oxygen 53.61 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
MgAl2Si2O6(OH)4 |
High-pressure/low-temperature mineral occurring in blueschist metamorphic rocks. |
Approved IMA 1979 |
Monticiano-Roccastrada Unit (Verrucano Formation, SouthernTuscany (Monte Leoni and Monte Argentario). Italy. Link to MinDat.org Location Data. |
Named as the Mg-dominant member of the carpholite series. |
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| | Magnesiocarpholite Crystallographya:b:c =0.6829:1:0.2543 |
a = 13.726, b = 20.099, c = 5.112, Z = 8; V = 1,410.29 Den(Calc)= 2.81 |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C cca |
By Intensity(I/Io): 5.66(1), 2.59(0.45), 5.02(0.45), |
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| Physical Properties of Magnesiocarpholite{???} Good |
Gray green, White. |
Translucent |
Columnar - Forms columns |
Fibrous - Crystals made up of fibers. |
5-5.5 - Apatite-Knife Blade |
Silky |
white |
| Optical Properties of Magnesiocarpholite CI calc= 0.04 (Good) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.2135,KC= 0.2225 Ncalc = 1.63 Biaxial (-), a=1.59, b=1.6, g=1.61, bire=0.0200, 2V(Calc)=88, 2V(Meas)=50-60. |
| Calculated Properties of MagnesiocarpholiteBulk Density (Electron Density)=2.82 gm/cc |
note: Specific Gravity of Magnesiocarpholite =2.81 gm/cc. Fermion Index = 0.01 |
Boson Index = 0.99 PEMagnesiocarpholite = 1.46 barns/electron |
U=PEMagnesiocarpholite x rElectron Density= 4.12 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Magnesiocarpholite is Not Radioactive | Magnesiocarpholite Classification65.01.05.03 (65)Inosilicate Single-Width Unbranched Chains, W=1 |
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(65.01)with chains P=2 |
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(65.01.05)Carpholite group |
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09.DB.05 09 - SILICATES (Germanates) |
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09.D - Inosilicates* Structural terminology according to Liebau (1985) |
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09.DB -Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals |
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| Other Magnesiocarpholite InformationNAME( EurJMin, v 13, p 533) PHYS. PROP.(EurJMin, v 13, p 533) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
Links to other databases for Magnesiocarpholite : |
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 Search for Magnesiocarpholite using: Visit our Advertisers for Magnesiocarpholite : 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 Magnesiocarpholite Mineral Data : Ask about Magnesiocarpholite here : Print or Cut-and-Paste your Magnesiocarpholite Specimen Label here :
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