Tlalocite Mineral Data
General Tlalocite Information
Chemical Formula:
Cu10Zn6(Te++++O3)(Te++++++O4)2Cl(OH)25•27(H2O)
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 % H2 O
Chlorine 1.40 % Cl 1.40 % Cl
- %
Cl -0.32 % -O=Cl2
Oxygen 39.78 % O
______ ______
100.00 % 98.74 % = TOTAL OXIDE
Empirical Formula:
Cu10 Zn6 (TeO3 )(TeO4 )2 Cl(OH)25 •27(H2 O)
Environment:
Secondary copper-zinc mineral.
IMA Status:
Approved IMA 1975
Locality:
Bambollita mine, Moctezuma, Sonora, Mexico. Link to MinDat.org Location Data.
Name Origin:
Named for Tlaloc, the god of rain in the Toltec and Aztec civilizations, in allusion to its high water content.
Name Pronunciation:
Tlalocite + Pronunciation
Tlalocite Image
Images:
Tlalocite Crystallography
Axial Ratios:
a:b:c =0.8396:1:0.6039
Cell Dimensions:
a = 16.78, b = 19.985, c = 12.069, Z = 4; V = 4,047.32 Den(Calc)= 4.16
Crystal System:
Orthorhombic Space Group: Unk.
X Ray Diffraction:
By Intensity(I/Io ): 4.201(1), 16.787(1), 8.394(0.8),
Physical Properties of Tlalocite
Color:
Blue, Capri blue.
Density:
4.55
Fracture:
Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Habit:
Encrustations - Forms crust-like aggregates on matrix.
Hardness:
1 - Talc
Streak:
light blue
Optical Properties of Tlalocite
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
Optical Data:
Biaxial (-), a=1.758, b=1.796, g=1.81, bire=0.0520, 2V(Calc)=60, 2V(Meas)=64.
Pleochroism (x):
yellowish green.
Pleochroism (y):
bluish green.
Pleochroism (z):
bluish green.
Calculated Properties of Tlalocite
Electron Density:
Bulk Density (Electron Density)=4.03 gm/cc note: Specific Gravity of Tlalocite =4.16 gm/cc.
Fermion Index:
Fermion Index = 0.01 Boson Index = 0.99
Photoelectric:
PETlalocite = 66.66 barns/electronU=PETlalocite x r Electron Density= 268.38 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tlalocite is Not Radioactive
Tlalocite Classification
Dana Class:
33.03.02.01 (33) Selenates and Tellurates
(33.03) with other anion groups
(33.03.02) Dana Group
33.03.02.01 Tlalocite Cu10Zn6(TeO3)(TeO4)2Cl(OH)25•27(H2O) Unk. Ortho
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
References:
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
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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Tlalocite
Cu10Zn6(Te++++O3)(Te++++++O4)2Cl(OH)25•27(H2O)
Dana No: 33.03.02.01 Strunz No: 07.DE.20
Locality:
Notes:
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