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Wilhelmkleinite Mineral Data

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General Wilhelmkleinite Information

Help on Chemical  Formula: Chemical Formula: ZnFe+++3(AsO4)2(OH)2
Help on Composition: Composition: Molecular Weight = 488.94 gm
   Zinc      13.37 %  Zn   16.65 % ZnO
   Iron      22.84 %  Fe   32.66 % Fe2O3
   Arsenic   30.65 %  As   47.01 % As2O5
   Hydrogen   0.41 %  H     3.68 % H2O
   Oxygen    32.72 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: ZnFe3+2(AsO4)2(OH)2
Help on Environment: Environment: Underground workings (level 44) of the Tsumeb mine in the third oxidation zone,
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Tsumeb mine, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Wilhelm Klein, former mine manager in Anamibia, who made the first systematic collection of minerals from the Tsumeb mine.
Help on Name Pronunciation: Name Pronunciation: Wilhelmkleinite + Pronunciation Say WILHELMKLEINITE
Help on Synonym: Synonym: ICSD 411044
  PDF 51-1670

Wilhelmkleinite Image

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Comments: Stout prismatic crystal of wihelmkleinite on matrix.
Location: Tsumeb mine, Namibia. Scale: See Image.
© William Pinch

Wilhelmkleinite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8712:1:0.9692
Help on Cell Dimensions: Cell Dimensions: a = 6.631, b = 7.611, c = 7.377, Z = 2; beta = 91.79° V = 372.12 Den(Calc)= 4.36
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.385(1), 3.315(0.78), 2.939(0.47),
Help on Forms: Forms:

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

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

Help on Above

Forms: ( 4 3 0) ( 1 0 0) ( 3 1 1)

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Physical Properties of Wilhelmkleinite

Help on Cleavage: Cleavage: {232} Imperfect
Help on Color: Color: Blackish green.
Help on Density: Density: 4.34 - 4.63, Average = 4.48
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: green

Optical Properties of Wilhelmkleinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.038 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2156,KPDmeas= 0.2096,KC= 0.2179
Ncalc = 1.95 - 2.01
Help on Optical Data: Optical Data: Biaxial (?), b=1.94

Calculated Properties of Wilhelmkleinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.10 gm/cc
note: Specific Gravity of Wilhelmkleinite =4.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEWilhelmkleinite = 34.96 barns/electron
U=PEWilhelmkleinite x rElectron Density= 143.39 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wilhelmkleinite is Not Radioactive

Wilhelmkleinite Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.05)where (A B)2 (XO4) Zq
  (41.05.19)Dana Group Wilhelmkleinite! ZnFe3(AsO4)2(OH)2 P 21/n 2/m
Help on  Strunz Class: Strunz Class: 08.BB.40 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.40 Barbosalite FeFe2(PO4)2(OH)2 P 21/c 2/m
08.BB.40 Wilhelmkleinite! ZnFe3(AsO4)2(OH)2 P 21/n 2/m
08.BB.40 Hentschelite CuFe2(PO4)2(OH)2 P 21/n 2/m
08.BB.40 Lazulite MgAl2(PO4)2(OH)2 P 21/c 2/m
08.BB.40 Scorzalite (Fe,Mg)Al2(PO4)2(OH)2 P 2/c 2/m

Other Wilhelmkleinite Information

Help on References: References: NAME( AmMin, Vol 84, No. 7-8) PHYS. PROP.(AmMin, Vol. 84, No. 7-8) OPTIC PROP.(AmMin, Vol. 84, No. 7-8)
Help on See Also: See Also: Links to other databases for Wilhelmkleinite :
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

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Dana No: Strunz No: 08.BB.40





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