Mroseite Mineral Data

Mroseite Mineral Data +

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General Mroseite Information

Chemical Formula:

CaTe++++(CO3)O2

Composition:

Molecular Weight = 259.69 gm

Calcium 15.43 % Ca 21.59 % CaO

Tellurium 49.14 % Te 61.46 % TeO₂

Carbon 4.63 % C 16.95 % CO₂

Oxygen 30.81 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaTe(CO₃)O₂

Environment:

Secondary mineral in telluride-bearing viens.

IMA Status:

Approved IMA 1975

Locality:

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

Name Origin:

Named for Mary Emma Mrose (1910-), American mineralogist, U. S. Geological Survey.

Synonym:

ICSD 4319

PDF 29-309

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Mroseite Crystallography

Axial Ratios:

a:b:c =0.6209:1:0.9444

Cell Dimensions:

a = 6.93, b = 11.16, c = 10.54, Z = 8; V = 815.15 Den(Calc)= 4.23

Crystal System:

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

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

By Intensity(I/I_o): 3.14(1), 5.14(0.9), 4.2(0.8),

Crystal Structure:

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Fischer R , Pertlik F , Zemann J , The Canadian Mineralogist , 13 (1975) p.383-387, The crystal structure of mroseite, CaTeO2(CO3)

Physical Properties of Mroseite

Color:

Colorless, White.

Density:

4.35

Diaphaniety:

Transparent

Hardness:

4 - Fluorite

Luster:

Adamantine

Streak:

white

Optical Properties of Mroseite

Gladstone-Dale:

CI meas= 0.053 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.026 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1994,KPDmeas= 0.1939,KC= 0.2046

Optical Data:

Biaxial (-), a=1.79, b=1.85, g=1.89, bire=0.1000, 2V(Calc)=76, 2V(Meas)=80.

Calculated Properties of Mroseite

Electron Density:

r_electron=3.84 gm/cc
note: r_Mroseite=4.23 gm/cc.

Fermion Index

Fermion Index = 0.04012
Boson Index = 0.95988

Photoelectric:

PE_Mroseite= 168.04 barns/electron
U=PE_Mroseite x r_electron= 645.97 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Mroseite is Not Radioactive

Mroseite Classification

Dana Class:

34.8.4.1 (34)Selenites - Tellurites - Sulfites

(34.8)Dana Type

(34.8.4)Dana Group

34.8.4.1 Mroseite CaTe(CO3)O2 P bca 2/m 2/m 2/m

Strunz Class:

IV/K.13-20 IV - Oxides

IV/K - Tellurides with [Te3O8]4- groups

IV/K.13 - Spiroffite - Carlfriesite series

IV/K.13-05 Zincospiroffite! Zn2Te3O8 C 2/c 2/m

IV/K.13-10 Spiroffite (Mn,Zn)2Te3O8 C 2/c 2/m

IV/K.13-20 Mroseite CaTe(CO3)O2 P bca 2/m 2/m 2/m

IV/K.13-30 Carlfriesite CaTe2TeO8 C 2/c 2/m

Other Mroseite 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 Mroseite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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

Mroseite

CaTe++++(CO3)O2
Dana No: 34.8.4.1 Strunz No: IV/K.13-20
Locality:

Notes: