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

Environment:

Tellurium-bearing gold quartz deposit in dolomite-calcite.

IMA Status:

Approved IMA 1982

Locality:

Kuranakh gold deposit, near Aldan, southern Sakha, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Yakutskii Filial Sibirskogo Otdeleniya Akademii Nauk (Yakut Filial, Siberian Branch, Academy of Sciences, YAFSOAN in Russian).

Name Pronunciation:

Yafsoanite + Pronunciation

Synonym:

ICSD 64791

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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
Ncalc = 1.91 - 2

Optical Data:

Isotropic, n=1.8.

Calculated Properties of Yafsoanite

Electron Density:

Bulk Density (Electron Density)=4.61 gm/cc
note: Specific Gravity of Yafsoanite =5.03 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Yafsoanite= 127.37 barns/electron
U=PE_Yafsoanite x rElectron Density= 587.31 barns/cc.

Radioactivity:

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

Yafsoanite Classification

Dana Class:

07.02.14.01 (07)Multiple Oxides

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

(07.02.14)Dana Group

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

Strunz Class:

04.CC.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.C - Metal:Oxygen = 2:3, 3:5, and Similar

04.CC -With large and medium-sized cations

04.CC.25 Yafsoanite Ca3Te2Zn3O12 I a3d 4/m 3 2/m

Other Yafsoanite Information

References:

NAME( AntBidBlaNic3) 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 - 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 Yafsoanite Specimen Label here :

Yafsoanite

Ca3Te2Zn3O12
Dana No: 07.02.14.01 Strunz No: 04.CC.25
Locality:

Notes: