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Ardennite-(V) Mineral Data
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General Ardennite-(V) Information
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Chemical Formula: |
Mn++4[Al4(Mg,Al,Fe+++,Mn+++)2][Si5(V,Si)]O22(OH)6 |
Composition: |
Molecular Weight = 1,015.46 gm |
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Sodium 0.01 % Na 0.02 % Na2O |
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Calcium 3.05 % Ca 4.27 % CaO |
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Magnesium 2.70 % Mg 4.47 % MgO |
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Titanium 0.13 % Ti 0.21 % TiO2 |
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Manganese 18.17 % Mn 22.49 % MnO / 1.01 % Mn2O3 |
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Aluminum 12.05 % Al 22.77 % Al2O3 |
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Vanadium 2.60 % V 4.64 % V2O5 |
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Chromium 0.24 % Cr 0.34 % Cr2O3 |
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Iron 1.15 % Fe 1.65 % Fe2O3 |
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Silicon 14.70 % Si 31.45 % SiO2 |
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Arsenic 0.24 % As 0.37 % As2O5 |
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Phosphorus 0.17 % P 0.38 % P2O5 |
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Hydrogen 0.64 % H 5.74 % H2O |
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Oxygen 43.97 % O |
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Fluorine 0.17 % F 0.17 % F |
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- %
F -0.07 % -O=F2 |
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______ ______ |
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100.00 % 99.94 % = TOTAL OXIDE |
Empirical Formula: |
Mn2+3.22Ca0.77Na0.006Al4.45Mg1.12Fe3+0.21Mn3+0.13Cr0.04Ti0.02Si5V5+0.51Si0.31
Al0.08P0.05As0.03O21.43(OH)6.47F0.09 |
Environment: |
Found in a specimen of piemontite-bearing mica schist. Forms a series with ardennite-(As). |
IMA Status: |
Approved IMA 2005 (Dana # Added) |
Locality: |
Sparone, Val di Locana, Piedmont, Italy. Link to MinDat.org Location Data. |
Name Origin: |
Named as the vanadium analogue of ardennite (ardennite-(As). |
Name Pronunciation: |
Ardennite-(V) + Pronunciation |
Synonym: |
IMA2005-037 |
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Ardennite-(V) Crystallography
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Axial Ratios: |
a:b:c =1.5005:1:3.1791 |
Cell Dimensions: |
a = 8.76, b = 5.838, c = 18.56, Z = 2; V = 949.17 Den(Calc)= 3.55 |
Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnmm |
X Ray Diffraction: |
By Intensity(I/Io): 2.609(1), 2.948(0.9), 1.585(0.75),2.033(0.55), 1.477(0.45), 1.525(0.39), 2.329(0.38), 2.271(0.37), |
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Physical Properties of Ardennite-(V)
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Cleavage: |
None |
Color: |
Yellow. |
Diaphaneity: |
Transparent |
Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Habit: |
Acicular - Occurs as needle-like crystals. |
Habit: |
Tabular - Form dimensions are thin in one direction. |
Hardness: |
6-7 - Orthoclase-Quartz |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Ardennite-(V)
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Optical Data: |
NCalc= 1.79 - from Gladstone-Dale relationship (KC = 0.2216) where Ncalc=Dcalc*KC+1 |
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Calculated Properties of Ardennite-(V)
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Electron Density: |
Bulk Density (Electron Density)=3.48 gm/cc note: Specific Gravity of Ardennite-(V) =3.55 gm/cc. |
Fermion Index: |
Fermion Index = 0.01 Boson Index = 0.99 |
Photoelectric: |
PEArdennite-(V) = 7.03 barns/electron U=PEArdennite-(V) x rElectron Density= 24.48 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ardennite-(V) is Not Radioactive |
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Ardennite-(V) Classification
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Dana Class: |
58.03.01.03 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups |
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(58.03)with insular single and triple groups (n=1,3) |
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(58.03.01)Ardennite group |
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58.03.01.01 Ardennite-(As) (Mn,Ca,Mg)4(Al,Mg,Fe)6(SiO4)2(Si3O10)(AsO4,VO4)(OH)6 Pnmm 2/m 2/m 2/m |
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58.03.01.02 Orientite Ca2MnMn2Si3O10(OH)4 C mcm 2/m 2/m 2/m |
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58.03.01.03 Ardennite-(V)! Mn4[Al4(Mg,Al,Fe,Mn)2][Si5(V,Si)]O22(OH)6 Pnmm 2/m 2/m 2/m |
Strunz Class: |
09.BJ.40 09 - SILICATES (Germanates) |
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09.B - Sorosilicates |
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09.BJ -Sorosilicates with Si3O10, Si4O11, etc |
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09.BJ.40 Ardennite-(As) (Mn,Ca,Mg)4(Al,Mg,Fe)6(SiO4)2(Si3O10)(AsO4,VO4)(OH)6 Pnmm 2/m 2/m 2/m |
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09.BJ.40 Ardennite-(V)! Mn4[Al4(Mg,Al,Fe,Mn)2][Si5(V,Si)]O22(OH)6 Pnmm 2/m 2/m 2/m |
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Other Ardennite-(V) Information
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References: |
NAME( AmMin, v93:702) PHYS. PROP.(AmMin, v93:702) OPTIC PROP.(AmMin, v93:702) |
See Also: |
Links to other databases for Ardennite-(V) :
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 Ardennite-(V) Specimen Label here :
Ardennite-(V)
Mn++4[Al4(Mg,Al,Fe+++,Mn+++)2][Si5(V,Si)]O22(OH)6
Dana No: 58.03.01.03 Strunz No: 09.BJ.40
Locality:
Notes:
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