Pingguite Mineral Data

General Pingguite Information

Chemical Formula:

Bi+++6Te++++2O13

Composition:

Molecular Weight = 1,717.07 gm

Bismuth 73.02 % Bi 81.41 % Bi₂O₃

Tellurium 14.86 % Te 18.59 % TeO₂

Oxygen 12.11 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Bi₆Te₂O₁₃

Environment:

In the oxidation zone of a small gold deposit.

IMA Status:

Approved IMA 1994

Locality:

At Yangjiava, Pinggu County, near Beijing, People's Republic of China. Link to MinDat.org Location Data.

Name Origin:

Named after its locality.

Name Pronunciation:

Pingguite + Pronunciation

Synonym:

IMA1993-019

Pingguite Crystallography

Axial Ratios:

a:b:c =0.5271:1:0.4918

Cell Dimensions:

a = 5.689, b = 10.791, c = 5.308, Z = 1; V = 325.86 Den(Calc)= 8.75

Crystal System:

Orthorhombic Space Group: Unk

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

By Intensity(I/I_o): 3.146(1), 2.841(0.8), 2.694(0.2),

Physical Properties of Pingguite

Cleavage:

None

Color:

Yellowish green.

Density:

8.44 - 8.64, Average = 8.53

Diaphaneity:

Transparent

Fracture:

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

Habit:

Columnar - Forms columns

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luster:

Vitreous - Greasy

Streak:

light yellowish green

Optical Properties of Pingguite

Gladstone-Dale:

CI meas= 0.224 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.243 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1226,KPDmeas= 0.1256,KC= 0.1619
Ncalc = 2.37 - 2.42

Optical Data:

Biaxial (?), a=2, b=2.145,

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Pingguite in Air**
λ	R	∑ R(λ)
470 nm	14.84
546 nm	13.03
589 nm	13.25
650 nm	13.64

**Calculated Relative Intensity Colors of Pingguite in Air**
Relative Intensity	0%	70%	100%	140%	210%	280%	350%	420%	490%	560%	630%	660%
R

Calculated Properties of Pingguite

Electron Density:

Bulk Density (Electron Density)=7.02 gm/cc
note: Specific Gravity of Pingguite =8.54 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Pingguite=1,484.54 barns/electron
U=PE_Pingguite x rElectron Density=10425.50 barns/cc.

Radioactivity:

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

Pingguite Classification

Dana Class:

34.05.04.01 (34)Selenites - Tellurites - Sulfites

(34.05)Dana Type

(34.05.04)Dana Group

34.05.04.01 Pingguite Bi6Te2O13 Unk Ortho

Strunz Class:

04.JL.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

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

04.JL -Tellurites with additional anions, without H2O

04.JL.20 Pingguite Bi6Te2O13 Unk Ortho

Other Pingguite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,p767,1996) OPTIC PROP.(Am.Min.,Vol.81,p767,1996)

See Also:

Links to other databases for Pingguite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Pingguite

Bi+++6Te++++2O13
Dana No: 34.05.04.01 Strunz No: 04.JL.20
Locality:

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