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Wolfeite Mineral Data

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General Wolfeite Information

Help on Chemical  Formula: Chemical Formula: (Fe++,Mn++)2(PO4)(OH)
Help on Composition: Composition: Molecular Weight = 223.22 gm
   Manganese   12.31 %  Mn   15.89 % MnO
   Iron        37.53 %  Fe   48.28 % FeO
   Phosphorus  13.88 %  P    31.80 % P2O5
   Hydrogen     0.45 %  H     4.04 % H2O
   Oxygen      35.84 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+1.5Mn2+0.5(PO4)(OH)
Help on Environment: Environment: Alteration product of triphylite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1949
Help on Locality: Locality: Palermo mine, North Groton, New Hampshire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Caleb Wroe Wolfe (1908-1980), crystallographer, Boston University.
Help on Name Pronunciation: Name Pronunciation: Wolfeite Say WOLFEITE
 

Wolfeite Image

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  Wolfeite

Comments: Opaque massive wolfeite.
Location: Wilson's Pegmatite, Broken Hill, New South Wales, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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  Wicksite   Wolfeite

Comments: Cleaved nodule of fine-grained aggregate of wicksite and wolfeite.
Location: Big Fish River, Yukon, Canada. Scale: 3 x 1.5 cm.
© Dave Barthelmy

Wolfeite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9263:1:0.7433
Help on Cell Dimensions: Cell Dimensions: a = 12.2, b = 13.17, c = 9.79, Z = 16; beta = 108° V = 1,496.01 Den(Calc)= 3.96
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.93(1), 3.09(0.9), 3.18(0.8),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 2 1) ( 0 1 0) ( 1 0 1) ( 1 1 0) ( 1 2 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Wolfeite

Help on Cleavage: Cleavage: {010} Good, {120} Distinct
Help on Color: Color: Greenish, Dark brown, Reddish brown.
Help on Density: Density: 3.79
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 4.5-5 - Near Apatite
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: white
 

Optical Properties of Wolfeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1913,KPDmeas= 0.1999,KC= 0.194
Ncalc = 1.74 - 1.77
Help on Optical Data: Optical Data: Biaxial (+), a=1.741, b=1.742, g=1.79, bire=0.0490
 

Calculated Properties of Wolfeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.81 gm/cc
note: Specific Gravity of Wolfeite =3.96 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0081287464
Boson Index = 0.9918712536
Help on Photoelectric: Photoelectric: PEWolfeite = 15.16 barns/electron
U=PEWolfeite x rElectron Density= 57.81 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wolfeite is Not Radioactive
 

Wolfeite Classification

Help on  Dana Class: Dana Class: 41.06.03.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.06)where (A)2 (XO4) Zq
  (41.06.03)Wolfeite Group
 
41.06.03.01 Wolfeite (Fe,Mn)2(PO4)(OH) P 21/a 2/m
 
41.06.03.02 Triploidite (Mn,Fe)2(PO4)(OH) P 21/a 2/m
 
41.06.03.03 Sarkinite Mn2(AsO4)(OH) P 21/a 2/m
 
41.06.03.04 Stanekite! Fe(Mn,Fe,Mg)(PO4)O P 21/a 2/m
 
41.06.03.06 Joosteite! (Mn,Mn,Fe)2(PO4)O I2/a 2/m
Help on  Strunz Class: Strunz Class: 08.BB.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BB -With only medium-sized cations, (OH, etc.):RO4 � 1:1
 
08.BB.15 Sarkinite Mn2(AsO4)(OH) P 21/a 2/m
 
08.BB.15 Stanekite! Fe(Mn,Fe,Mg)(PO4)O P 21/a 2/m
 
08.BB.15 Triploidite (Mn,Fe)2(PO4)(OH) P 21/a 2/m
 
08.BB.15 Wagnerite (Mg,Fe)2(PO4)F P 21/a 2/m
 
08.BB.15 Wolfeite (Fe,Mn)2(PO4)(OH) P 21/a 2/m
 
08.BB.15 Joosteite! (Mn,Mn,Fe)2(PO4)O I2/a 2/m
 

Other Wolfeite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Wolfeite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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

Wolfeite

(Fe++,Mn++)2(PO4)(OH)
Dana No: 41.06.03.01 Strunz No: 08.BB.15
Locality:

 

Notes:

 

 
   
 


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