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Magnesiocarpholite Mineral Data

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General Magnesiocarpholite Information

Help on Chemical  Formula: Chemical Formula: MgAl2Si2O6(OH)4
Help on Composition: Composition: Molecular Weight = 298.46 gm
   Magnesium   8.14 %  Mg   13.50 % MgO
   Aluminum   18.08 %  Al   34.16 % Al2O3
   Silicon    18.82 %  Si   40.26 % SiO2
   Hydrogen    1.35 %  H    12.07 % H2O
   Oxygen     53.61 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: MgAl2Si2O6(OH)4
Help on Environment: Environment: High-pressure/low-temperature mineral occurring in blueschist metamorphic rocks.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Monticiano-Roccastrada Unit (Verrucano Formation, SouthernTuscany (Monte Leoni and Monte Argentario). Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Mg-dominant member of the carpholite series.
 

Magnesiocarpholite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6829:1:0.2543
Help on Cell Dimensions: Cell Dimensions: a = 13.726, b = 20.099, c = 5.112, Z = 8; V = 1,410.29 Den(Calc)= 2.81
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C cca
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.66(1), 2.59(0.45), 5.02(0.45),
 

Physical Properties of Magnesiocarpholite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Gray green, White.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Columnar - Forms columns
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 5-5.5 - Apatite-Knife Blade
Help on Luster: Luster: Silky
Help on Streak: Streak: white
 

Optical Properties of Magnesiocarpholite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.04 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2135,KC= 0.2225
Ncalc = 1.63
Help on Optical Data: Optical Data: Biaxial (-), a=1.59, b=1.6, g=1.61, bire=0.0200, 2V(Calc)=88, 2V(Meas)=50-60.
 

Calculated Properties of Magnesiocarpholite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.82 gm/cc
note: Specific Gravity of Magnesiocarpholite =2.81 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEMagnesiocarpholite = 1.46 barns/electron
U=PEMagnesiocarpholite x rElectron Density= 4.12 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Magnesiocarpholite is Not Radioactive
 

Magnesiocarpholite Classification

Help on  Dana Class: Dana Class: 65.01.05.03 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.01)with chains P=2
  (65.01.05)Carpholite group
 
65.01.05.01 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
65.01.05.02 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
65.01.05.03 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
65.01.05.04 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m
 
65.01.05.05 Potassiccarpholite! (K,Na,[])(Li,Mn)2Al)4Si4O12(OH)4(F,OH)4 C cca 2/m 2/m 2/m
 
65.01.05.06 Vanadiocarpholite! MnVAl(Si2O6)(OH)4 C cca 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DB.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DB -Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
 
09.DB.05 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
09.DB.05 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m
 
09.DB.05 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
09.DB.05 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
09.DB.05 Potassiccarpholite! (K,Na,[])(Li,Mn)2Al)4Si4O12(OH)4(F,OH)4 C cca 2/m 2/m 2/m
 
09.DB.05 Vanadiocarpholite! MnVAl(Si2O6)(OH)4 C cca 2/m 2/m 2/m
 

Other Magnesiocarpholite Information

Help on References: References: NAME( EurJMin, v 13, p 533) PHYS. PROP.(EurJMin, v 13, p 533) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Magnesiocarpholite :
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

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Print or Cut-and-Paste your Magnesiocarpholite Specimen Label here :

Magnesiocarpholite

MgAl2Si2O6(OH)4
Dana No: 65.01.05.03 Strunz No: 09.DB.05
Locality:

 

Notes:

 

 
   
 


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