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Vanadiocarpholite Mineral Data
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General Vanadiocarpholite Information
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Chemical Formula: |
Mn++V+++Al(Si2O6)(OH)4 |
Composition: |
Molecular Weight = 353.06 gm |
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Manganese 15.56 % Mn 20.09 % MnO |
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Aluminum 7.64 % Al 14.44 % Al2O3 |
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Vanadium 14.43 % V 21.23 % V2O3 |
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Silicon 15.91 % Si 34.04 % SiO2 |
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Hydrogen 1.14 % H 10.21 % H2O |
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Oxygen 45.32 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Mn2+V3+AlSi2O6(OH)4 |
Environment: |
Found in open fissures in a silicified wood sample from Mn-ore bearing cherts. Carpholite group |
IMA Status: |
Approved IMA 2003 (Dana # Added) |
Locality: |
Molinello Mine, Graveglia Valley, Ne, Genova Province, Liguria, Italy. Link to MinDat.org Location Data. |
Name Origin: |
Named as the V-dominant analogue of carpholite. |
Synonym: |
IMA2003-055 |
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Vanadiocarpholite Image |
Images:
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Vanadiocarpholite
Comments: Micro-fibrous tan crystals of vanadiocarpholite to 0.75mm.
Location: Molinello Mine, Graveglia Valley, Ne, Genova Province, Liguria, Italy.
Scale: Picture size 2 mm.
© Tom Loomis / Dakota Matrix |
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Vanadiocarpholite Crystallography
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Axial Ratios: |
a:b:c =0.6687:1:0.2508 |
Cell Dimensions: |
a = 13.83, b = 20.681, c = 5.188, Z = 8; V = 1,483.86 Den(Calc)= 3.16 |
Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C cca |
X Ray Diffraction: |
By Intensity(I/Io): 5.75(1), 2.641(0.26), 3.08(0.22),5.15(0.18), 3.46(0.15), 4.72(0.14), |
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Physical Properties of Vanadiocarpholite
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Cleavage: |
{010} Perfect |
Color: |
Pale straw yellow, Brown. |
Diaphaneity: |
Transparent |
Fracture: |
Flexible - Flexible fragments. |
Habit: |
Acicular - Occurs as needle-like crystals. |
Luster: |
Vitreous - Silky |
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Optical Properties of Vanadiocarpholite
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Gladstone-Dale: |
CI calc= 0.065 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2189,KC= 0.2342 Ncalc = 1.74 |
Optical Data: |
Biaxial (+), a=1.684, b=1.691, g=1.7, bire=0.0160 |
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Calculated Properties of Vanadiocarpholite
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Electron Density: |
Bulk Density (Electron Density)=3.10 gm/cc note: Specific Gravity of Vanadiocarpholite =3.16 gm/cc. |
Fermion Index: |
Fermion Index = 0.0080098526 Boson Index = 0.9919901474 |
Photoelectric: |
PEVanadiocarpholite = 7.49 barns/electron U=PEVanadiocarpholite x rElectron Density= 23.19 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Vanadiocarpholite is Not Radioactive |
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Vanadiocarpholite Classification
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Dana Class: |
65.01.05.06 (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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65.01.05.01 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m |
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65.01.05.02 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m |
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65.01.05.03 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m |
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65.01.05.04 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m |
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65.01.05.05 Potassiccarpholite! (K,Na,[])(Li,Mn)2Al)4Si4O12(OH)4(F,OH)4 C cca 2/m 2/m 2/m |
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65.01.05.06 Vanadiocarpholite! MnVAl(Si2O6)(OH)4 C cca 2/m 2/m 2/m |
Strunz Class: |
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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09.DB.05 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m |
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09.DB.05 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m |
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09.DB.05 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m |
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09.DB.05 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m |
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09.DB.05 Potassiccarpholite! (K,Na,[])(Li,Mn)2Al)4Si4O12(OH)4(F,OH)4 C cca 2/m 2/m 2/m |
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09.DB.05 Vanadiocarpholite! MnVAl(Si2O6)(OH)4 C cca 2/m 2/m 2/m |
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Other Vanadiocarpholite Information
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References: |
NAME( EurJMin v17:501) PHYS. PROP.(EurJMin v17:501) |
See Also: |
Links to other databases for Vanadiocarpholite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Vanadiocarpholite Specimen Label here :
Vanadiocarpholite
Mn++V+++Al(Si2O6)(OH)4
Dana No: 65.01.05.06 Strunz No: 09.DB.05
Locality:
Notes:
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