Mineralogy Database

Choloalite Mineral Data

Search Webmineral :

General Choloalite Information

Help on Chemical  Formula: Chemical Formula: CuPb(Te++++O3)2
Help on Composition: Composition: Molecular Weight = 639.96 gm
   Copper      9.93 %  Cu   12.43 % CuO
   Tellurium  39.88 %  Te   49.88 % TeO2
   Hydrogen    0.32 %  H     2.82 % H2O
   Lead       32.38 %  Pb   34.88 % PbO
   Oxygen     17.50 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CuPb(TeO3)2•(H2O)
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Bambollita mine, Moctezuma, Sonora, Mexic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Nahua "choloa", evasive, in allusion to the fact that the mineral escaped detection in the mine for many years.

Choloalite Image

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

  Choloalite   Hessite

Comments: Sparse green crusts of choloalite with metallic hessite.
Location: McAlpine Mine, Tuolumne County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Choloalite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 12.519, Z = 12; V = 1,962.05 Den(Calc)= 6.50
Help on Crystal System: Crystal System: Isometric Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.036(1), 3.343(0.6), 7.223(0.5),

Physical Properties of Choloalite

Help on Cleavage: Cleavage: None
Help on Color: Color: Dark green.
Help on Density: Density: 6.4
Help on Fracture: Fracture: Brittle - Irregular - Very brittle fracture producing irregular fragments
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: green

Optical Properties of Choloalite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.084 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.098 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.16,KPDmeas= 0.1625,KC= 0.1773
Ncalc = 2.13 - 2.15
Help on Optical Data: Optical Data: Isotropic, n=2.04.

Calculated Properties of Choloalite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.46 gm/cc
note: Specific Gravity of Choloalite =6.40 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.1
Boson Index = 0.9
Help on Photoelectric: Photoelectric: PECholoalite = 730.87 barns/electron
U=PECholoalite x rElectron Density=3,990.80 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Choloalite is Not Radioactive

Choloalite Classification

Help on  Dana Class: Dana Class: (34)Selenites - Tellurites - Sulfites
  (34.02)as A++ XO3 � x(H2O)
  (34.02.04)Dana Group Choloalite CuPb(TeO3)2 Unk Cubic
Help on  Strunz Class: Strunz Class: 04.JK.45 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JK -Tellurites without additional anions, without H2O
04.JK.45 Choloalite CuPb(TeO3)2 Unk Cubic

Other Choloalite 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 Choloalite :
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

Search for Choloalite using:

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

Visit our Advertisers for Choloalite :

Ask about Choloalite 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 Choloalite Specimen Label here :


Dana No: Strunz No: 04.JK.45





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