Mineralogy Database

Thometzekite Mineral Data

Search Webmineral :
  
Advertisment

General Thometzekite Information

Help on Chemical  Formula: Chemical Formula: Pb(Cu,Zn)2(AsO4)2•2(H2O)
Help on Composition: Composition: Molecular Weight = 649.08 gm
   Zinc       5.04 %  Zn    6.27 % ZnO
   Copper    14.69 %  Cu   18.38 % CuO
   Arsenic   23.09 %  As   35.41 % As2O5
   Hydrogen   0.62 %  H     5.55 % H2O
   Lead      31.92 %  Pb   34.39 % PbO
   Oxygen    24.65 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: PbCu1.5Zn0.5(AsO4)2•2(H2O)
Help on Environment: Environment: Rare secondary mineral from an oxidized zone in a dolostone-hosted hydrothermal polymetallic ore deposit
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: From Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Wilhelm Thometzek, former General Manager of the Tsumeb mining company.
Help on Name Pronunciation: Name Pronunciation: Thometzekite + Pronunciation Say THOMETZEKITE
 

Thometzekite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image

  Thometzekite

Comments: Pale olive-green colored thometzekite crusts on quartz.
Location: Moldovo. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thometzekite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4392:1:1.211
Help on Cell Dimensions: Cell Dimensions: a = 9.112, b = 6.331, c = 7.667, Z = 2; beta = 116.74° V = 394.99 Den(Calc)= 5.46
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.688(1), 3.273(0.88), 2.865(0.7),
 

Physical Properties of Thometzekite

Help on Color: Color: Bluish green, Green.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white
 

Optical Properties of Thometzekite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1612,KC= 0.1631
Ncalc = 1.89
Help on Optical Data: Optical Data: Biaxial (+), a=1.85, b=1.87, g=1.92, bire=0.0700, 2V(Calc)=68, 2V(Meas)=70.
 

Calculated Properties of Thometzekite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.89 gm/cc
note: Specific Gravity of Thometzekite =5.46 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEThometzekite = 573.77 barns/electron
U=PEThometzekite x rElectron Density=2,804.16 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Thometzekite is Not Radioactive
 

Thometzekite Classification

Help on  Dana Class: Dana Class: 40.02.09.03 (40)Hydrated Phosphates, etc
  (40.02)where A++ (B++)2 (XO4) � x(H2O)
  (40.02.09)Helmutwinklerite Subgroup
 
40.02.09.01 Tsumcorite PbZnFe(AsO4)2•(H2O) C 2/m 2/m
 
40.02.09.02 Helmutwinklerite PbZn2(AsO4)2•2(H2O) P1 1
 
40.02.09.03 Thometzekite Pb(Cu,Zn)2(AsO4)2•2(H2O) C 2/m 2/m
 
40.02.09.04 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
40.02.09.05 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2•2(H2O) P1 1
 
40.02.09.06 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
40.02.09.07 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
40.02.09.08 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.CG.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CG -With large and medium-sized cations, RO4:H2O = 1:1
 
08.CG.15 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
08.CG.15 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m
 
08.CG.15 Cabalzarite! Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2 C 2/m 2/m
 
08.CG.15 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
08.CG.15 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono
 
08.CG.15 Mounanaite PbFe2(VO4)2(OH)2 P1 1
 
08.CG.15 Tsumcorite PbZnFe(AsO4)2•(H2O) C 2/m 2/m
 
08.CG.15 Thometzekite Pb(Cu,Zn)2(AsO4)2•2(H2O) C 2/m 2/m
 
08.CG.15 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
08.CG.15 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
08.CG.15 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
08.CG.15 Krettnichite! PbMn2(VO4)2(OH)2 C 2/m 2/m
 
08.CG.15 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
08.CG.15 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 

Other Thometzekite Information

Help on References: References: NAME( AntBidBlaNic4) 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 Thometzekite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Thometzekite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Thometzekite :

Ask about Thometzekite 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 Thometzekite Specimen Label here :

Thometzekite

Pb(Cu,Zn)2(AsO4)2•2(H2O)
Dana No: 40.02.09.03 Strunz No: 08.CG.15
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.