Xocomecatlite Mineral Data

General Xocomecatlite Information

Chemical Formula:

Cu3Te++++++O4(OH)4

Composition:

Molecular Weight = 450.26 gm

Copper 42.34 % Cu 53.00 % CuO

Tellurium 28.34 % Te 35.45 % TeO₂

Hydrogen 0.90 % H 8.00 % H₂O

Oxygen 28.43 % O

______ ______

100.00 % 96.45 % = TOTAL OXIDE

Empirical Formula:

Cu₃(TeO₄)(OH)₄

Environment:

In cracks in altered rhyolite.

IMA Status:

Approved IMA 1975

Locality:

Bambollita mine, Moctezuma, Sonora, Mexico. Link to MinDat.org Location Data.

Name Origin:

Named for the Nahuatl for "bunches of grapes", in allusion to the appearance of the green spherules of the mineral.

Name Pronunciation:

Xocomecatlite + Pronunciation

Xocomecatlite Image

Images:

Xocomecatlite

Comments: Green botryoidal xocomecatlite coatings.
Location: Mina Bambollita, Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Xocomecatlite

Comments: Green spheroidal crystals to 0.5 mm of very rare xocometcatlite.
Location: Centennial-Eureka mine, Tintic district, Utah, USA. Scale: Picture size 2 mm.
© Tom Loomis / Dakota Matrix

Xocomecatlite Crystallography

Axial Ratios:

a:b:c =0.8478:1:0.8144

Cell Dimensions:

a = 12.14, b = 14.318, c = 11.662, Z = 12; V = 2,027.09 Den(Calc)= 4.43

Crystal System:

Orthorhombic Space Group: Unk

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.627(1), 2.673(0.6), 3.439(0.4),

Physical Properties of Xocomecatlite

Color:

Green, Emerald green.

Density:

4.65

Fracture:

Tough - Difficult to break apart as shown by fibrous minerals and most metals.

Habit:

Botryoidal - "Grape-like" rounded forms (e.g.. malachite).

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

4 - Fluorite

Luminescence:

Non-fluorescent.

Streak:

light green

Optical Properties of Xocomecatlite

Gladstone-Dale:

CI meas= 0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.036 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1953,KPDmeas= 0.186,KC= 0.1886
Ncalc = 1.84 - 1.88

Optical Data:

Biaxial (-), a=1.775, b=1.9, g=1.92, bire=0.1450, 2V(Calc)=40, 2V(Meas)=41. Dispersion low.

Pleochroism (y):

rich bluish green.

Calculated Properties of Xocomecatlite

Electron Density:

Bulk Density (Electron Density)=4.28 gm/cc
note: Specific Gravity of Xocomecatlite =4.65 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Xocomecatlite}= 114.00 barns/electron
U=PE_{Xocomecatlite} x rElectron Density= 487.39 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Xocomecatlite is Not Radioactive

Xocomecatlite Classification

Dana Class:

33.01.02.01 (33)Selenates and Tellurates

(33.01)as A+ (B++)m XO4 Zq

(33.01.02)Dana Group

33.01.02.01 Xocomecatlite Cu3TeO4(OH)4 Unk Ortho

Strunz Class:

07.BB.50 07 - SULFATES (SELENATES, TELLURATES)

07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O

07.BB -With medium-sized cations

07.BB.50 Xocomecatlite Cu3TeO4(OH)4 Unk Ortho

Other Xocomecatlite Information

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 Xocomecatlite :
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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Print or Cut-and-Paste your Xocomecatlite Specimen Label here :

Xocomecatlite

Cu3Te++++++O4(OH)4
Dana No: 33.01.02.01 Strunz No: 07.BB.50
Locality:

Notes:

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