Wilhelmkleinite Mineral Data

[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop

General Wilhelmkleinite Information

Chemical Formula:

ZnFe+++3(AsO4)2(OH)2

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

Empirical Formula:

ZnFe³⁺₂(AsO₄)₂(OH)₂

Environment:

Underground workings (level 44) of the Tsumeb mine in the third oxidation zone,

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Tsumeb mine, Namibia. Link to MinDat.org Location Data.

Name Origin:

Named after Wilhelm Klein, former mine manager in Anamibia, who made the first systematic collection of minerals from the Tsumeb mine.

Name Pronunciation:

Wilhelmkleinite + Pronunciation

Synonym:

ICSD 411044

IMA1997-034

PDF 51-1670

Wilhelmkleinite Image

Images:

Wilhelmkleinite

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

Wilhelmkleinite Crystallography

Axial Ratios:

a:b:c =0.8712:1:0.9692

Cell Dimensions:

a = 6.631, b = 7.611, c = 7.377, Z = 2; beta = 91.79° V = 372.12 Den(Calc)= 4.36

Crystal System:

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

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

By Intensity(I/I_o): 3.385(1), 3.315(0.78), 2.939(0.47),

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

Adiwidjaja G , Friese K , Klaska K H , Moore P B , Schluter J , Zeitschrift fur Kristallographie , 215 (2000) p.96-101, The crystal structure of the new mineral wilhelmkleinite ZnFe3+2(OH)2(AsO4)2, Locality: Tsumeb mine, Namibia

Physical Properties of Wilhelmkleinite

Cleavage:

{232} Imperfect

Color:

Blackish green.

Density:

4.34 - 4.63, Average = 4.48

Diaphaneity:

Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Adamantine

Streak:

green

Optical Properties of Wilhelmkleinite

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

Optical Data:

Biaxial (?), b=1.94

Calculated Properties of Wilhelmkleinite

Electron Density:

Bulk Density (Electron Density)=4.10 gm/cc
note: Specific Gravity of Wilhelmkleinite =4.36 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Wilhelmkleinite}= 34.96 barns/electron
U=PE_{Wilhelmkleinite} x rElectron Density= 143.39 barns/cc.

Radioactivity:

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

Wilhelmkleinite Classification

Dana Class:

41.05.19.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.05)where (A B)2 (XO4) Zq

(41.05.19)Dana Group

41.05.19.01 Wilhelmkleinite! ZnFe3(AsO4)2(OH)2 P 2₁/n 2/m

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

References:

NAME( AmMin, Vol 84, No. 7-8) PHYS. PROP.(AmMin, Vol. 84, No. 7-8) OPTIC PROP.(AmMin, Vol. 84, No. 7-8)

See Also:

Links to other databases for Wilhelmkleinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - Handbook of Mineralogy (MinSocAm)
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

Search for Wilhelmkleinite using:

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

Visit our Advertisers for Wilhelmkleinite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Diamond Dan Publications

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Wilhelmkleinite Mineral Data :

Ask about Wilhelmkleinite 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 Wilhelmkleinite Specimen Label here :

Wilhelmkleinite

ZnFe+++3(AsO4)2(OH)2
Dana No: 41.05.19.01 Strunz No: 08.BB.40
Locality:

Notes: