Tolovkite Mineral Data

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General Tolovkite Information

Chemical Formula:

IrSbS

Composition:

Molecular Weight = 346.04 gm

Antimony 35.18 % Sb

Iridium 55.55 % Ir

Sulfur 9.27 % S

______

100.00 %

Empirical Formula:

IrSbS

Environment:

In placers derived from an Alpine-type gabbo massif.

IMA Status:

Approved IMA 1981

Locality:

Ust'-Bel'skii massif, Tolvka River, Northeastern Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Tolovkite + Pronunciation

Synonym:

ICSD 74630

PDF 35-656

Tolovkite Image

Images:

Tolovkite

Comments: Dark gray metallic crystal of tolovkite embedded in epoxy.
Location: Placer from Ust-Belsky Massif, Korjak Highand, Russia. Scale: See Image.
© Rruff Database

Tolovkite Crystallography

Cell Dimensions:

a = 6.027, Z = 4; V = 218.93 Den(Calc)= 10.50

Crystal System:

Isometric - TetartoidalH-M Symbol (2 3) Space Group: P 2₁3

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

By Intensity(I/I_o): 1.813(1), 1.146(0.9), 2.99(0.9),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Bayliss P , American Mineralogist , 74 (1989) p.1168-1176, Crystal chemistry and crystallography of some minerals within the pyrite group

Physical Properties of Tolovkite

Cleavage:

None

Color:

Steel gray.

Density:

10.5

Diaphaneity:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Hardness:

7.5 - Garnet

Luster:

Metallic

Optical Properties of Tolovkite

RL Color:

Gray with a pale brown tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Tolovkite in Air**
λ	R	∑ R(λ)
442 nm	36.70
468 nm	39.00
484 nm	39.90
525 nm	42.00
554 nm	42.50
586 nm	42.90
621 nm	43.50
666 nm	43.80
699 nm	44.00

**Calculated Relative Intensity Colors of Tolovkite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	230%
R

Calculated Properties of Tolovkite

Electron Density:

Bulk Density (Electron Density)=8.74 gm/cc
note: Specific Gravity of Tolovkite =10.5 gm/cc.

Fermion Index:

Fermion Index = 0.0006949999
Boson Index = 0.9993050001

Photoelectric:

PE_Tolovkite= 951.75 barns/electron
U=PE_Tolovkite x rElectron Density=8,317.28 barns/cc.

Radioactivity:

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

Tolovkite Classification

Dana Class:

02.12.03.05 (02)Sulfides - Including Selenides and Tellurides

(02.12)where Am Bn Xp, with (m+n):p=1:2

(02.12.03)Cobaltite Group (Cubic or pseudocubic crystals)

02.12.03.01 Cobaltite CoAsS P ca2₁ mm2

02.12.03.02 Gersdorffite NiAsS P 2₁3 2 3

02.12.03.03 Ullmannite NiSbS P 2₁3 2 3

02.12.03.04 Willyamite (Co,Ni)SbS P 2₁3 2 3

02.12.03.05 Tolovkite IrSbS P 2₁3 2 3

02.12.03.06 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3

02.12.03.07 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3

02.12.03.08 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3

02.12.03.09 Jolliffeite (Ni,Co)AsSe P a3 2/m 3

02.12.03.10 Padmaite PdBiSe P 2₁3 2 3

02.12.03.11 Michenerite (Pd,Pt)BiTe P 2₁3 2 3

02.12.03.12 Maslovite PtBiTe P 2₁3 2 3

02.12.03.13 Testibiopalladite PdTe(Sb,Te) P 2₁3 2 3

02.12.03.14 Changchengite! IrBiS P 2₁3 2 3

02.12.03.15 Milotaite! PdSbSe P 2₁/3 2 3

02.12.03.16 Kalungaite! PdAsSe Pa3 2/m 3

Strunz Class:

02.EB.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.E - Metal Sulfides, M:S £ 1:2

02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.

02.EB.25 Cobaltite CoAsS P ca2₁ mm2

02.EB.25 Changchengite! IrBiS P 2₁3 2 3

02.EB.25 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3

02.EB.25 Gersdorffite NiAsS P 2₁3 2 3

02.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3

02.EB.25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3

02.EB.25 Krutovite NiAs2 P a3 2/m 3

02.EB.25 Michenerite (Pd,Pt)BiTe P 2₁3 2 3

02.EB.25 Maslovite PtBiTe P 2₁3 2 3

02.EB.25 Mayingite IrBiTe P a3 2/m 3

02.EB.25 Padmaite PdBiSe P 2₁3 2 3

02.EB.25 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3

02.EB.25 Ullmannite NiSbS P 2₁3 2 3

02.EB.25 Tolovkite IrSbS P 2₁3 2 3

02.EB.25 Testibiopalladite PdTe(Sb,Te) P 2₁3 2 3

02.EB.25 Willyamite (Co,Ni)SbS P 2₁3 2 3

02.EB.25 Kalungaite! PdAsSe Pa3 2/m 3

02.EB.25 Milotaite! PdSbSe P 2₁/3 2 3

Other Tolovkite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Tolovkite :
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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Ask about Tolovkite here :
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Print or Cut-and-Paste your Tolovkite Specimen Label here :

Tolovkite

IrSbS
Dana No: 02.12.03.05 Strunz No: 02.EB.25
Locality:

Notes: