Phosphovanadylite Mineral Data

[Newest Minerals] [Equipment] [Analytical Services] [About Us] [Mineral Gallery] [eBay Store]
See Also: [Diamond Crystals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Rare Minerals, Meteorites, Equipment and Analytical Services
Excalibur Mineral Company, World leaders in the supply of rare species
Serving the scientific and collector communities since 1974

General Phosphovanadylite Information

Chemical Formula:

(Ba,Ca,K,Na)x[(V,Al)4P2(O,OH)16]•12(H2O) x~0.66

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

Empirical Formula:

Ba_0.4Ca_0.2K_0.1Na_0.1V⁵⁺_3.4Al_0.5P₂O_10.3(OH)_5.7·12(H₂O)

Environment:

Meade Peak Member of the Permian Phosphoria Formation in phosphatic organic-matter-rich mudstone..

IMA Status:

Approved IMA 1996 (Dana # Added)

Locality:

Monsanto's Enoch Valley mine, Soda Springs, Idaho, USA. Link to MinDat.org Location Data.

Name Origin:

Named after its composition of phosphate and the vanadyl (V++++O2)-- group.

Name Pronunciation:

Phosphovanadylite + Pronunciation

Synonym:

IMA1996-037

Phosphovanadylite Image

Images:

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

Cell Dimensions:

a = 15.457, Z = 6; V = 3,692.97 Den(Calc)= 2.15

Crystal System:

Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: I 43m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.164(1), 2.582(0.37), 2.445(0.36),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Medrano M D , Evans H T , Wenk H R , Piper D Z , American Mineralogist , 83 (1998) p.889-895, Phosphovanadylite: A new vanadium phosphate mineral with a zeolite-type, structure

Physical Properties of Phosphovanadylite

Color:

Light greenish blue.

Density:

2.16

Diaphaneity:

Transparent

Habit:

Blocky - Crystal shape tends to be equant (e.g. feldspars).

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Luster:

Vitreous (Glassy)

Streak:

very pale greenish blue

Optical Properties of Phosphovanadylite

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

Optical Data:

Isotropic, n=1.566.

Calculated Properties of Phosphovanadylite

Electron Density:

Bulk Density (Electron Density)=2.15 gm/cc
note: Specific Gravity of Phosphovanadylite =2.15 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Phosphovanadylite}= 32.38 barns/electron
U=PE_{Phosphovanadylite} x r_electron= 69.61 barns/cc.

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

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

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

References:

NAME( AmMin) PHYS. PROP.(Am.Min.,Vol.83,p889-895,1998) OPTIC PROP.(AmMin)

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

Search for Phosphovanadylite using:

[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Phosphovanadylite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Phosphovanadylite Mineral Data :

Ask about Phosphovanadylite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Phosphovanadylite Specimen Label here :

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: