Carlfriesite Mineral Data

General Carlfriesite Information

Chemical Formula:

CaTe++++2Te++++++O8

Composition:

Molecular Weight = 550.87 gm

Calcium 7.28 % Ca 10.18 % CaO

Tellurium 69.49 % Te 86.92 % TeO₂

Oxygen 23.23 % O

______ ______

100.00 % 97.10 % = TOTAL OXIDE

Empirical Formula:

CaTe₂TeO₈

Environment:

Cavities in an oxidized hydrothermal Au–Te deposit in intensely silicified brecciated rhyolite vitrophyre.

IMA Status:

Approved IMA 1975

Locality:

Oriental (Bambollita) mine, northeast of the Moctezuma (Bambolla) mine, 12 km south of Moctezuma, Sonora, Mexico. Link to MinDat.org Location Data.

Name Origin:

Named for Carl Fries, Jr. (1910-1965), U.S. Geological Survey and the Geological Institute of the National University, Mexico City, Mexico

Synonym:

ICSD 100661

PDF 29-333

Carlfriesite Image

Images:

Carlfriesite

Comments: Pale bright yellow crystalline carlfriesite botryoids on white calcite.
Location: Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Carlfriesite Crystallography

Axial Ratios:

a:b:c =2.2211:1:1.7651

Cell Dimensions:

a = 12.576, b = 5.662, c = 9.994, Z = 4; beta = 115.56° V = 641.98 Den(Calc)= 5.70

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

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

By Intensity(I/I_o): 3.167(1), 3.082(0.9), 5.063(0.6),

Crystal Structure:

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Effenberger H , Zemann J , Mayer H , American Mineralogist , 63 (1978) p.847-852, Carlfriesite: crystal structure, revision of chemical formula, and synthesis

Physical Properties of Carlfriesite

Cleavage:

{010} Distinct

Color:

Yellow.

Density:

6.3

Hardness:

3.5 - Copper Penny

Streak:

yellow

Optical Properties of Carlfriesite

Gladstone-Dale:

CI meas= 0.118 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.026 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1911,KPDmeas= 0.1729,KC= 0.1961
Ncalc = 2.12 - 2.24

Optical Data:

Biaxial (-), a=1.982, b=2.095, g=2.19, bire=0.2080, 2V(Calc)=80, 2V(Meas)=80.

Calculated Properties of Carlfriesite

Electron Density:

Bulk Density (Electron Density)=4.97 gm/cc
note: Specific Gravity of Carlfriesite =5.70 gm/cc.

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_Carlfriesite= 245.73 barns/electron
U=PE_Carlfriesite x rElectron Density=1,220.46 barns/cc.

Radioactivity:

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

Carlfriesite Classification

Dana Class:

34.05.03.01 (34)Selenites - Tellurites - Sulfites

(34.05)Dana Type

(34.05.03)Dana Group

34.05.03.01 Carlfriesite CaTe2TeO8 C 2/c 2/m

Strunz Class:

04.JK.25 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

04.JK.25 Carlfriesite CaTe2TeO8 C 2/c 2/m

Other Carlfriesite Information

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Carlfriesite :
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
15 - WWW-MINCRYST

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

Carlfriesite

CaTe++++2Te++++++O8
Dana No: 34.05.03.01 Strunz No: 04.JK.25
Locality:

Notes: