Ardennite-(V)  Mineral Data

Ardennite-(V) Mineral Data

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General Ardennite-(V) Information

Help on Chemical  Formula: Chemical Formula: Mn++4[Al4(Mg,Al,Fe+++,Mn+++)2][Si5(V,Si)]O22(OH)6
Help on Composition: Composition: Molecular Weight = 1,015.46 gm
   Sodium       0.01 %  Na    0.02 % Na2O
   Calcium      3.05 %  Ca    4.27 % CaO
   Magnesium    2.70 %  Mg    4.47 % MgO
   Titanium     0.13 %  Ti    0.21 % TiO2
   Manganese   18.17 %  Mn   22.49 % MnO /  1.01 % Mn2O3
   Aluminum    12.05 %  Al   22.77 % Al2O3
   Vanadium     2.60 %  V     4.64 % V2O5
   Chromium     0.24 %  Cr    0.34 % Cr2O3
   Iron         1.15 %  Fe    1.65 % Fe2O3
   Silicon     14.70 %  Si   31.45 % SiO2
   Arsenic      0.24 %  As    0.37 % As2O5
   Phosphorus   0.17 %  P     0.38 % P2O5
   Hydrogen     0.64 %  H     5.74 % H2O
   Oxygen      43.97 %  O
   Fluorine     0.17 %  F     0.17 % F
                 -   %   F    -0.07 % -O=F2    
              ______        ______ 
              100.00 %       99.94 % = TOTAL OXIDE
Help on Empirical Formula: 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
Help on Environment: Environment: Found in a specimen of piemontite-bearing mica schist. Forms a series with ardennite-(As).
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Sparone, Val di Locana, Piedmont, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the vanadium analogue of ardennite (ardennite-(As).
Help on Name Pronunciation: Name Pronunciation: Ardennite-(V) + Pronunciation Say ARDENNITE-(V)
Help on Synonym: Synonym: IMA2005-037
 

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Ardennite-(V) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.5005:1:3.1791
Help on Cell Dimensions: Cell Dimensions: a = 8.76, b = 5.838, c = 18.56, Z = 2; V = 949.17 Den(Calc)= 3.55
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnmm
Help on X Ray Diffraction: 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),
 

Physical Properties of Ardennite-(V)

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 6-7 - Orthoclase-Quartz
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Ardennite-(V)

Help on Optical Data: Optical Data: NCalc= 1.79 - from Gladstone-Dale relationship (KC = 0.2216) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Ardennite-(V)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.48 gm/cc
note: Specific Gravity of Ardennite-(V) =3.55 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEArdennite-(V) = 7.03 barns/electron
U=PEArdennite-(V) x rElectron Density= 24.48 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ardennite-(V) is Not Radioactive
 

Ardennite-(V) Classification

Help on  Dana Class: Dana Class: 58.03.01.03 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
  (58.03)with insular single and triple groups (n=1,3)
  (58.03.01)Ardennite group
 
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
 
58.03.01.02 Orientite Ca2MnMn2Si3O10(OH)4 C mcm 2/m 2/m 2/m
 
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
Help on  Strunz Class: Strunz Class: 09.BJ.40 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BJ -Sorosilicates with Si3O10, Si4O11, etc
 
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
 
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
 

Other Ardennite-(V) Information

Help on References: References: NAME( AmMin, v93:702) PHYS. PROP.(AmMin, v93:702) OPTIC PROP.(AmMin, v93:702)
Help on See Also: 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: