Yafsoanite Mineral Data

Yafsoanite Mineral Data +

General Yafsoanite Information

Chemical Formula:

Ca3Te2Zn3O12

Composition:

Molecular Weight = 763.60 gm

Calcium 15.75 % Ca 22.03 % CaO

Zinc 25.69 % Zn 31.98 % ZnO

Tellurium 33.42 % Te 41.80 % TeO₂

Oxygen 25.14 % O

______ ______

100.00 % 95.81 % = TOTAL OXIDE

Empirical Formula:

Ca₃Te₂Zn₃O₁₂

IMA Status:

Approved IMA 1982

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 64791

PDF 35-661

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Yafsoanite Crystallography

Cell Dimensions:

a = 12.632, Z = 8; V = 2,015.66 Den(Calc)= 5.03

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: I a3d

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

By Intensity(I/I_o): 1.683(1), 2.58(1), 2.82(0.9),

Crystal Structure:

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Rozhdestvenskaya I V , Zajakina N V , Kim A A , Mineralogiceskij Zhurnal , 6 (1984) p.75-79, Crystal structure of a zinc calcium tellurate - yafsoanite

Physical Properties of Yafsoanite

Color:

Light brown, Dark brown.

Density:

5.55

Hardness:

5.5 - Knife Blade

Luster:

Vitreous (Glassy)

Optical Properties of Yafsoanite

Gladstone-Dale:

CI meas= 0.203 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.12 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.159,KPDmeas= 0.1441,KC= 0.1808

Optical Data:

Isotropic, n=1.8.

Calculated Properties of Yafsoanite

Electron Density:

r_electron=4.61 gm/cc
note: r_Yafsoanite=5.03 gm/cc.

Fermion Index

Fermion Index = 0.03756
Boson Index = 0.96244

Photoelectric:

PE_Yafsoanite= 127.37 barns/electron
U=PE_Yafsoanite x r_electron= 587.31 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Yafsoanite is Not Radioactive

Yafsoanite Classification

Dana Class:

7.2.14.1 (7)Multiple Oxides

(7.2)(A+ B++)2 X4 Spinel group

(7.2.14)Dana Group

7.2.14.1 Yafsoanite Ca3Te2Zn3O12 I a3d 4/m 3 2/m

Strunz Class:

IV/K.15-30 IV - Oxides

IV/K - Complex Tellurides with [TeO6]6-, [TeO3]2- and [TeO4]2- groups

IV/K.15 - Yafsoanite - Cuzticite series

IV/K.15-10 Frankhawthorneite Cu2TeO4(OH)2 P 2₁/n 2/m

IV/K.15-12 Xocomecatlite Cu3TeO4(OH)4 Unk Ortho

IV/K.15-15 Mcalpineite Cu3TeO6·(H2O) Unk Cubic

IV/K.15-16 Jensenite Cu3TeO6·2(H2O) P 2₁/n 2/m

IV/K.15-18 Leisingite! Cu(Mg,Cu,Fe,Zn)2TeO6·6(H2O) P 31m 3 2/m

IV/K.15-19 Utahite! Cu5Zn3(TeO4)4(OH)8·7(H2O) P1 or P1 Tri

IV/K.15-20 Cuzticite Fe2TeO6·3(H2O) Unk Hex

IV/K.15-30 Yafsoanite Ca3Te2Zn3O12 I a3d 4/m 3 2/m

IV/K.15-40 Khinite PbCu3TeO6(OH)2 F ddd 2/m 2/m 2/m

IV/K.15-50 Parakhinite Cu3PbTeO4(OH)6 P 6₂22 or P 6₄22 6 2 2

IV/K.15-60 Montanite Bi2TeO6·2(H2O) Mono

Other Yafsoanite Information

References:

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

See Also:

Links to other databases for Yafsoanite :
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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Yafsoanite

Ca3Te2Zn3O12
Dana No: 7.2.14.1 Strunz No: IV/K.15-30
Locality:

Notes: