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Tlalocite Mineral Data

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General Tlalocite Information

Help on Chemical  Formula: Chemical Formula: Cu10Zn6(Te++++O3)(Te++++++O4)2Cl(OH)25•27(H2O)
Help on Composition: Composition: Molecular Weight = 2,533.64 gm
   Zinc       15.49 %  Zn   19.27 % ZnO
   Copper     25.08 %  Cu   31.40 % CuO
   Tellurium  15.11 %  Te   18.90 % TeO2
   Hydrogen    3.14 %  H    28.09 % H2O
   Chlorine    1.40 %  Cl    1.40 % Cl
                -   %   Cl   -0.32 % -O=Cl2   
   Oxygen     39.78 %  O
             ______        ______ 
             100.00 %       98.74 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu10Zn6(TeO3)(TeO4)2Cl(OH)25•27(H2O)
Help on Environment: Environment: Secondary copper-zinc mineral.
Help on IMA Status: IMA Status: Approved IMA 1975
Help on Locality: Locality: Bambollita mine, Moctezuma, Sonora, Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Tlaloc, the god of rain in the Toltec and Aztec civilizations, in allusion to its high water content.
Help on Name Pronunciation: Name Pronunciation: Tlalocite + Pronunciation Say TLALOCITE

Tlalocite Image

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Comments: Green, spherulitic aggregates of Tlalocite on matrix.
Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Tlalocite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8396:1:0.6039
Help on Cell Dimensions: Cell Dimensions: a = 16.78, b = 19.985, c = 12.069, Z = 4; V = 4,047.32 Den(Calc)= 4.16
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk.
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.201(1), 16.787(1), 8.394(0.8),

Physical Properties of Tlalocite

Help on Color: Color: Blue, Capri blue.
Help on Density: Density: 4.55
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 1 - Talc
Help on Streak: Streak: light blue

Optical Properties of Tlalocite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.219 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.146 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1894,KPDmeas= 0.1732,KC= 0.2217
Ncalc = 1.92 - 2.01
Help on Optical Data: Optical Data: Biaxial (-), a=1.758, b=1.796, g=1.81, bire=0.0520, 2V(Calc)=60, 2V(Meas)=64.
Help on Pleochroism (x): Pleochroism (x): yellowish green.
Help on Pleochroism (y): Pleochroism (y): bluish green.
Help on Pleochroism (z): Pleochroism (z): bluish green.

Calculated Properties of Tlalocite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.03 gm/cc
note: Specific Gravity of Tlalocite =4.16 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PETlalocite = 66.66 barns/electron
U=PETlalocite x rElectron Density= 268.38 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tlalocite is Not Radioactive

Tlalocite Classification

Help on  Dana Class: Dana Class: (33)Selenates and Tellurates
  (33.03)with other anion groups
  (33.03.02)Dana Group Tlalocite Cu10Zn6(TeO3)(TeO4)2Cl(OH)25•27(H2O) Unk. Ortho
Help on  Strunz Class: Strunz Class: 07.DE.20 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DE -With only medium-sized cations; unclassified
07.DE.20 Tlalocite Cu10Zn6(TeO3)(TeO4)2Cl(OH)25•27(H2O) Unk. Ortho

Other Tlalocite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Tlalocite :
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

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Dana No: Strunz No: 07.DE.20





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