Clerite Mineral Data

Clerite Mineral Data

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General Clerite Information

Chemical Formula:

MnSb2S4

Composition:

Molecular Weight = 426.70 gm

Manganese 12.88 % Mn

Antimony 57.07 % Sb

Sulfur 30.06 % S

______

100.00 %

Empirical Formula:

Mn²⁺Sb₂S₄

Environment:

In pyrite-realgar ore.

IMA Status:

Approved IMA 1995 (Dana # Added)

Locality:

The Vorontsovskoye gold deposit in the Ural Mountains near Serov about 300 km north of Ekaterinburg, Russia. Link to MinDat.org Location Data.

Name Origin:

For Onisim Yegorovitch Kler (1845-1920), Honorary Member of the Russian Mineralogical Society.

Synonym:

ICSD 79676

IMA1995-029

PDF 83-580

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Clerite Crystallography

Axial Ratios:

a:b:c =0.7987:1:0.2653

Cell Dimensions:

a = 11.47, b = 14.36, c = 3.81, Z = 4; V = 627.54 Den(Calc)= 4.52

Crystal System:

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

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

By Intensity(I/I_o): 2.65(1), 3.69(0.9), 2.9(0.8),

Physical Properties of Clerite

Cleavage:

None

Color:

Black.

Density:

4.93 - 4.39, Average = 4.66

Diaphaniety:

Opaque

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Hardness:

3.5-4 - Copper Penny-Fluorite

Luster:

Sub Metallic

Streak:

brown

Optical Properties of Clerite

RL Anisotrophism:

Strong.

RL Bireflectance:

Distinct.

RL Color:

Light gray.

RL Pleochroism:

None.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Clerite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	35.00	24.00
546 nm	36.10	23.90
589 nm	36.90	24.90
650 nm	35.60	25.70

**Calculated Relative Intensity Colors of Clerite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	360%	370%
R₁
R₂

Calculated Properties of Clerite

Electron Density:

r_electron=4.05 gm/cc
note: r_Clerite=4.52 gm/cc.

Fermion Index

Fermion Index = 0.00225
Boson Index = 0.99775

Photoelectric:

PE_Clerite= 192.73 barns/electron
U=PE_Clerite x r_electron= 779.89 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Clerite is Not Radioactive

Clerite Classification

Dana Class:

3.7.9.5 (3)Sulfides - Sulfosalts

(3.7)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(3.7.9)Dana Group

3.7.9.1 Galenobismutite PbBi2S4 Pnam 2/m 2/m 2/m

3.7.9.2 Sakharovaite (Pb,Fe)(Bi,Sb)2S4 Mono

3.7.9.3 Berthierite FeSb2S4 Pnam 2/m 2/m 2/m

3.7.9.4 Garavellite FeSbBiS4 Pnam 2/m 2/m 2/m

3.7.9.5 Clerite ! MnSb2S4 Pnam 2/m 2/m 2/m

Strunz Class:

II/E.01-05 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x), Sulfosalts with predominant Iron and Copper x = 2.0

II/E.01 - Berthierite - Garavellite series

II/E.01-05 Clerite MnSb2S4 Pnam 2/m 2/m 2/m

II/E.01-10 Berthierite FeSb2S4 Pnam 2/m 2/m 2/m

II/E.01-20 Garavellite FeSbBiS4 Pnam 2/m 2/m 2/m

Other Clerite Information

References:

NAME( AmMin, Vol. 28, No 3) PHYS. PROP.(Eur. J. Min.,Vol.8,1996) OPTIC PROP.(MinRec, v 28, p 220)

See Also:

Links to other databases for Clerite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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

Clerite

MnSb2S4
Dana No: 3.7.9.5 Strunz No: II/E.01-05
Locality:

Notes: