Cesbronite Mineral Data

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Cesbronite Mineral Data

General Cesbronite Information

Chemical Formula:

Cu5(TeO3)2(OH)6•2(H2O)

Composition:

Molecular Weight = 807.00 gm

Copper 39.37 % Cu 49.28 % CuO

Tellurium 31.62 % Te 39.55 % TeO₂

Hydrogen 1.25 % H 11.16 % H₂O

Oxygen 27.76 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₅(TeO₃)₂(OH)₆•2(H₂O)

Environment:

Secondary mineral.

IMA Status:

Approved IMA 1974

Locality:

Bambollita ("La Oriental") mine, Moctezuma, Sonora, Mexico. Link to MinDat.org Location Data.

Name Origin:

Named for Fabien Cesbron (1938-), French mineralogist, Bureau de Recherches Geologiques et Miniere, Orleans. France.

Cesbronite Image

Images:

Cesbronite

Comments: Minute green spherical cesbronite on calcite.
Location: Mina La Oriental, Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cesbronite Crystallography

Axial Ratios:

a:b:c =0.726:1:0.4943

Cell Dimensions:

a = 8.624, b = 11.878, c = 5.872, Z = 2; V = 601.50 Den(Calc)= 4.46

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bcn

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

By Intensity(I/I_o): 5.934(1), 3.49(0.92), 4.889(0.71),

Physical Properties of Cesbronite

Cleavage:

{021} Good, {010} Indistinct

Color:

Green.

Density:

4.45

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

3 - Calcite

Luminescence:

Non-fluorescent.

Luster:

Subadamantine

Streak:

light green

Optical Properties of Cesbronite

Gladstone-Dale:

CI meas= -0.056 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.054 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.212,KPDmeas= 0.2125,KC= 0.2012
Ncalc = 1.9

Optical Data:

Biaxial (+), a=1.88, b=1.928, g=2.029, bire=0.1490, 2V(Calc)=74, 2V(Meas)=72. Dispersion r > v.

Pleochroism (x):

pale bluish green.

Pleochroism (y):

rich yellow green.

Pleochroism (z):

deep emerald green.

Calculated Properties of Cesbronite

Electron Density:

Bulk Density (Electron Density)=4.10 gm/cc
note: Specific Gravity of Cesbronite =4.46 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Cesbronite= 123.60 barns/electron
U=PE_Cesbronite x rElectron Density= 506.84 barns/cc.

Radioactivity:

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

Cesbronite Classification

Dana Class:

33.02.07.01 (33)Selenates and Tellurates

(33.02)as A+ (B++)m XO6 Zq · x(H2O) where x can equal 0

(33.02.07)Dana Group

33.02.07.01 Cesbronite Cu5(TeO3)2(OH)6•2(H2O) P bcn 2/m 2/m 2/m

Strunz Class:

04.JN.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.J - Arsenites, Antimonites, Bismuthites, Sulfites,

04.JN -Tellurites with additional anions, with H2O

04.JN.15 Cesbronite Cu5(TeO3)2(OH)6•2(H2O) P bcn 2/m 2/m 2/m

04.JN.15 Cesbronite-x Cu5(TeO3)2(OH)6•2(H2O) P bcn 2/m 2/m 2/m

Other Cesbronite 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 Cesbronite :
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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Ask about Cesbronite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Cesbronite

Cu5(TeO3)2(OH)6•2(H2O)
Dana No: 33.02.07.01 Strunz No: 04.JN.15
Locality:

Notes: