Wolfeite Mineral Data

[On-Line Catalogue] [On-Line Auctions] [eBay] [Contact Us] [Policies]
We specialize in fine European and Asian Mineral Specimens
Heliodor is based in Prague, Czech Republic

General Wolfeite Information

Chemical Formula:

(Fe++,Mn++)2(PO4)(OH)

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

Empirical Formula:

Fe²⁺_1.5Mn²⁺_0.5(PO₄)(OH)

Environment:

Alteration product of triphylite.

IMA Status:

Valid Species (Pre-IMA) 1949

Locality:

Palermo mine, North Groton, New Hampshire. Link to MinDat.org Location Data.

Name Origin:

Named for Caleb Wroe Wolfe (1908-1980), crystallographer, Boston University.

Name Pronunciation:

Wolfeite

Wolfeite Image

Images:

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

Images:

Wolfeite Wicksite

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

Axial Ratios:

a:b:c =0.9263:1:0.7433

Cell Dimensions:

a = 12.2, b = 13.17, c = 9.79, Z = 16; beta = 108° V = 1,496.01 Den(Calc)= 3.96

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

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

By Intensity(I/I_o): 2.93(1), 3.09(0.9), 3.18(0.8),

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)

Warning: this large pop-up is very compute intensive and may not work well with some computers.

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

Kolitsch U , Acta Crystallographica, Section E , 59 (2003) p.i125-i128, Mg-rich wolfeite, (Fe,Mg)2(PO4)(OH): structure refinement and, Raman spectroscopic data, Locality: Big Fish River area, Yukon Territory, Canada

Physical Properties of Wolfeite

Cleavage:

{010} Good, {120} Distinct

Color:

Greenish, Dark brown, Reddish brown.

Density:

3.79

Diaphaneity:

Transparent to Translucent

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Hardness:

4.5-5 - Near Apatite

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Wolfeite

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

Optical Data:

Biaxial (+), a=1.741, b=1.742, g=1.79, bire=0.0490

Calculated Properties of Wolfeite

Electron Density:

Bulk Density (Electron Density)=3.81 gm/cc
note: Specific Gravity of Wolfeite =3.96 gm/cc.

Fermion Index:

Fermion Index = 0.0081287464
Boson Index = 0.9918712536

Photoelectric:

PE_Wolfeite= 15.16 barns/electron
U=PE_Wolfeite x rElectron Density= 57.81 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wolfeite is Not Radioactive

Wolfeite Classification

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

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

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - MinMax(Deutsch)
12 - MinMax(English)
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

Search for Wolfeite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Wolfeite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Wolfeite Mineral Data :

Ask about Wolfeite 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 Wolfeite Specimen Label here :

Wolfeite

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

Notes: