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Phosphovanadylite Mineral Data

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General Phosphovanadylite Information

Help on Chemical  Formula: Chemical Formula: (Ba,Ca,K,Na)x[(V,Al)4P2(O,OH)16]•12(H2O) x~0.66
Help on Composition: Composition: Molecular Weight = 795.71 gm
   Potassium    0.49 %  K     0.59 % K2O
   Barium       6.90 %  Ba    7.71 % BaO
   Sodium       0.29 %  Na    0.39 % Na2O
   Calcium      1.01 %  Ca    1.41 % CaO
   Aluminum     1.70 %  Al    3.20 % Al2O3
   Vanadium    21.77 %  V    38.86 % V2O5
   Phosphorus   7.79 %  P    17.84 % P2O5
   Hydrogen     3.76 %  H    33.62 % H2O
   Oxygen      56.30 %  O
              ______        ______ 
              100.00 %      103.62 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba0.4Ca0.2K0.1Na0.1V5+3.4Al0.5P2O10.3(OH)5.7�12(H2O)
Help on Environment: Environment: Meade Peak Member of the Permian Phosphoria Formation in phosphatic organic-matter-rich mudstone..
Help on IMA Status: IMA Status: Approved IMA 1996 (Dana # Added)
Help on Locality: Locality: Monsanto's Enoch Valley mine, Soda Springs, Idaho, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its composition of phosphate and the vanadyl (V++++O2)-- group.
Help on Name Pronunciation: Name Pronunciation: Phosphovanadylite + Pronunciation Say PHOSPHOVANADYLITE
Help on Synonym: Synonym: IMA1996-037
 

Phosphovanadylite Image

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  Phosphovanadylite

Comments: Scanning electron microscope micrographs showing the cubic habit of phosphovanadylite. (AmMin 83:890).
Location: Phosphoria Formation at Monsanto’s Enoch Valley Mine, Soda Springs, Idaho. Scale: Crystal size 40 µm.
© American Mineralogist

Phosphovanadylite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 15.457, Z = 6; V = 3,692.97 Den(Calc)= 2.15
Help on Crystal System: Crystal System: Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: I 43m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.164(1), 2.582(0.37), 2.445(0.36),
 

Physical Properties of Phosphovanadylite

Help on Color: Color: Light greenish blue.
Help on Density: Density: 2.16
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: very pale greenish blue
 

Optical Properties of Phosphovanadylite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.128 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.124 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2633,KPDmeas= 0.262,KC= 0.3004
Ncalc = 1.65
Help on Optical Data: Optical Data: Isotropic, n=1.566.
 

Calculated Properties of Phosphovanadylite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.15 gm/cc
note: Specific Gravity of Phosphovanadylite =2.15 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEPhosphovanadylite = 32.38 barns/electron
U=PEPhosphovanadylite x relectron= 69.61 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 7.09 (Gamma Ray American Petroleum Institute Units)
Concentration of Phosphovanadylite per GRapi unit = 14.10 (%)

Estimated Radioactivity from Phosphovanadylite - barely detectable

 

Phosphovanadylite Classification

Help on  Dana Class: Dana Class: 42.11.19.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.19)Sincosite Group
 
42.11.19.01 Sincosite Ca(VO)2(PO4)2•5(H2O) P mmm or P 4/nmm Tetra
 
42.11.19.02 Bariosincosite! Ba(VO)2(PO4)2•4(H2O) P 4/n or P 4/nmm 4/m
 
42.11.19.03 Phosphovanadylite! (Ba,Ca,K,Na)x[(V,Al)4P2(O,OH)16]•12(H2O)x~0.66 I 43m 4 3m
Help on  Strunz Class: Strunz Class: 08.DM.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DM -With large and medium-sized cations, (OH, etc.):RO4 > 2:1
 
08.DM.20 Phosphovanadylite! (Ba,Ca,K,Na)x[(V,Al)4P2(O,OH)16]•12(H2O)x~0.66 I 43m 4 3m
 

Other Phosphovanadylite Information

Help on References: References: NAME( AmMin) PHYS. PROP.(Am.Min.,Vol.83,p889-895,1998) OPTIC PROP.(AmMin)
Help on See Also: See Also: Links to other databases for Phosphovanadylite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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Phosphovanadylite

(Ba,Ca,K,Na)x[(V,Al)4P2(O,OH)16]•12(H2O) x~0.66
Dana No: 42.11.19.03 Strunz No: 08.DM.20
Locality:

 

Notes:

 

 
   
 


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