Vanadiocarpholite Mineral Data (original) (raw)
General Vanadiocarpholite Information
Chemical Formula:
Mn++V+++Al(Si2O6)(OH)4
Composition:
Molecular Weight = 353.06 gm
Manganese 15.56 % Mn 20.09 % MnO
Aluminum 7.64 % Al 14.44 % Al2O3
Vanadium 14.43 % V 21.23 % V2O3
Silicon 15.91 % Si 34.04 % SiO2
Hydrogen 1.14 % H 10.21 % H2O
Oxygen 45.32 % O
______ ______
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
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
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 - DipyramidalH-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),
Crystal Structure:
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| | Basso R , Cabella R , Lucchetti G , Martinelli A , Palenzona A , European Journal of Mineralogy , 17 (2005) p.501-507, Vanadiocarpholite, Mn2+V3+Al(Si2O6)(OH)4, a new mineral, from the Molinello mine, northern Apennines, Italy, Note: sample VC, Locality: Molinello mine, northern Apennines, Italy | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Vanadiocarpholite
Cleavage:
{010} Perfect
Color:
Pale straw yellow, Brown.
Diaphaneity:
Transparent
Fracture:
Flexible - Flexible fragments.
Habit:
Acicular - Occurs as needle-like crystals.
Luster:
Vitreous - Silky
Optical Properties of Vanadiocarpholite
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
Calculated Properties of Vanadiocarpholite
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
Vanadiocarpholite Classification
Dana Class:
65.01.05.06 (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
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 Vanadiocarpholite Information
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: