Kolarite Mineral Data

Kolarite Mineral Data +

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General Kolarite Information

Chemical Formula:

PbTeCl2

Composition:

Molecular Weight = 405.71 gm

Tellurium 31.45 % Te

Lead 51.07 % Pb

Chlorine 17.48 % Cl

______

100.00 %

Empirical Formula:

PbTeCl₂

Environment:

Primary mineral in a hydrothermal gold-quartz vein containing sulfides and selenides.

IMA Status:

Approved IMA 1985

Locality:

Champion Reef mine, Kolar Geold Fields, Karnataka, India. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

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Kolarite Crystallography

Axial Ratios:

a:b:c =1.8246:1:1.1969

Cell Dimensions:

a = 5.93, b = 3.25, c = 3.89, Z = 1; V = 74.97 Den(Calc)= 8.99

Crystal System:

OrthorhombicSpace Group: Unk

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

By Intensity(I/I_o): 3.27(1), 2.35(0.5), 3.91(0.4),

Physical Properties of Kolarite

Color:

Gray.

Density:

9.14

Diaphaniety:

Opaque

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Luster:

Metallic

Optical Properties of Kolarite

RL Color:

Gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Kolarite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	25.00	26.10
420 nm	25.30	26.20
440 nm	25.60	26.50
460 nm	25.90	27.00
480 nm	26.50	27.50
500 nm	27.00	27.90
520 nm	27.40	28.30
540 nm	27.70	28.60
560 nm	28.10	29.00
580 nm	28.30	29.20
600 nm	28.50	29.40
620 nm	28.60	29.60
640 nm	28.60	29.60
660 nm	28.60	29.50
680 nm	28.60	29.50
700 nm	28.60	29.50

**Calculated Relative Intensity Colors of Kolarite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	340%
R₁
R₂

Calculated Properties of Kolarite

Electron Density:

r_electron=7.45 gm/cc
note: r_Kolarite=8.99 gm/cc.

Fermion Index

Fermion Index = 0.13799
Boson Index = 0.86201

Photoelectric:

PE_Kolarite=1,064.46 barns/electron
U=PE_Kolarite x r_electron=7,925.31 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kolarite is Not Radioactive

Kolarite Classification

Dana Class:

2.15.3.1 (2)Sulfides - Including Selenides and Tellurides

(2.15)(Chlorides)

(2.15.3)Dana Group

2.15.3.1 Kolarite PbTeCl2 Unk Ortho

Strunz Class:

II/F.15-10 II - Sulfides and sulphosalts

II/F - Sulfides with nonmetallic properties, Halogensulfides (Sulfohalides) with Mercury/Lead and related compounds

II/F.15 - Kolarite - Radhakrishnaite series

II/F.15-10 Kolarite PbTeCl2 Unk Ortho

II/F.15-20 Radhakrishnaite PbTe3(Cl,S)2 Unk Tetra

Other Kolarite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Kolarite :
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 -École des Mines de Paris

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Kolarite

PbTeCl2
Dana No: 2.15.3.1 Strunz No: II/F.15-10
Locality:

Notes: