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General Choloalite Information |
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 Chemical Formula: |
CuPb(Te++++O3)2 | ||
| 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 | |||
| Empirical Formula: |
CuPb(TeO3)2•(H2O) | ||
| IMA Status: |
Approved IMA 1981 | ||
| Locality: |
Bambollita mine, Moctezuma, Sonora, Mexic. Link to MinDat.org Location Data. | ||
| 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 | |||
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Images:
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Choloalite Crystallography |
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| Cell Dimensions: |
a = 12.519, Z = 12; V = 1,962.05 Den(Calc)= 6.50 | ||
| Crystal System: |
IsometricSpace Group: Unk | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.036(1), 3.343(0.6), 7.223(0.5), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Choloalite |
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| Cleavage: |
None | ||
| Color: |
Dark green. | ||
| Density: |
6.4 | ||
| Fracture: |
Brittle - Irregular - Very brittle fracture producing irregular fragments | ||
| Habit: |
Euhedral Crystals - Occurs as well-formed crystals showing good external form. | ||
| Hardness: |
3 - Calcite | ||
| Luster: |
Adamantine | ||
| Streak: |
green | ||
Optical Properties of Choloalite |
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| 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 |
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| Optical Data: |
Isotropic, n=2.04. | ||
Calculated Properties of Choloalite |
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| Electron Density: |
Bulk Density (Electron Density)=5.46 gm/cc note: Specific Gravity of Choloalite =6.40 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.1 Boson Index = 0.9 |
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| Photoelectric: |
PECholoalite = 730.87 barns/electron U=PECholoalite x rElectron Density=3,990.80 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Choloalite is Not Radioactive |
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Choloalite Classification |
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| Dana Class: |
34.02.04.01 (34)Selenites - Tellurites - Sulfites | ||
| (34.02)as A++ XO3 · x(H2O) | |||
| (34.02.04)Dana Group | |||
| 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 | |||
Other Choloalite Information |
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| 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 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: Visit our Advertisers for Choloalite : A Bijoux Google Search for CholoaliteAdam's Minerals Google Search for Choloalite Cape Minerals Google Search for Choloalite Dakota Matrix Minerals Google Search for Choloalite Excalibur Mineral Corp. Google Search for Choloalite Exceptional Minerals Google Search for Choloalite John Betts Fine Minerals Search for Choloalite McDougall Minerals Google Search for Choloalite Mineral News Website Link Rock and Mineral Shows Google Search for Choloalite Weinrich Minerals, Inc. Google Search for Choloalite Ask about Choloalite here : Print or Cut-and-Paste your Choloalite Specimen Label here :
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