General Tolovkite Information
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Chemical Formula: |
IrSbS |
Composition: |
Molecular Weight = 346.04 gm |
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Antimony 35.18 % Sb |
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Iridium 55.55 % Ir |
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Sulfur 9.27 % S |
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______ |
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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. |
Synonym: |
ICSD 74630 |
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PDF 35-656 |
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Search for Tolovkite Images |
Images:
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Tolovkite Crystallography
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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 |
X Ray Diffraction: |
By Intensity(I/Io): 1.813(1), 1.146(0.9), 2.99(0.9), |
Crystal Structure:
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Bayliss P , American Mineralogist , 74 (1989) p.1168-1176, Crystal chemistry and crystallography of some minerals within the pyrite group
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Physical Properties of Tolovkite
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Cleavage: |
None |
Color: |
Steel gray. |
Density: |
10.5 |
Diaphaniety: |
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 |
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Optical Properties of Tolovkite
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RL Color: |
Gray with a pale brown tint. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Tolovkite in Air
| λ |
R |
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∑ R(λ) |
| 442 nm |
36.70 |
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| 468 nm |
39.00 |
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| 484 nm |
39.90 |
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| 525 nm |
42.00 |
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| 554 nm |
42.50 |
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| 586 nm |
42.90 |
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| 621 nm |
43.50 |
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| 666 nm |
43.80 |
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| 699 nm |
44.00 |
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Calculated Relative Intensity Colors of Tolovkite in Air
Relative Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
230% |
| R |
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Calculated Properties of Tolovkite
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Electron Density: |
relectron=8.74 gm/cc note: rTolovkite =10.5 gm/cc. |
Fermion Index |
Fermion Index = 0.00069 Boson Index = 0.99931 |
Photoelectric: |
PETolovkite = 951.75 barns/electron U=PETolovkite x relectron=8,317.28 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tolovkite is Not Radioactive |
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Tolovkite Classification
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Dana Class: |
2.12.3.5 (2)Sulfides - Including Selenides and Tellurides |
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(2.12)where Am Bn Xp, with (m+n):p=1:2 |
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(2.12.3)Cobaltite Group (Cubic or pseudocubic crystals) |
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2.12.3.1 Cobaltite CoAsS P ca21 mm2 |
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2.12.3.2 Gersdorffite NiAsS P 213 2 3 |
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2.12.3.3 Ullmannite NiSbS P 213 2 3 |
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2.12.3.4 Willyamite (Co,Ni)SbS P 213 2 3 |
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2.12.3.5 Tolovkite IrSbS P 213 2 3 |
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2.12.3.6 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3 |
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2.12.3.7 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3 |
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2.12.3.8 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3 |
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2.12.3.9 Jolliffeite (Ni,Co)AsSe P a3 2/m 3 |
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2.12.3.10 Padmaite PdBiSe P 213 2 3 |
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2.12.3.11 Michenerite (Pd,Pt)BiTe P 213 2 3 |
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2.12.3.12 Maslovite PtBiTe P 213 2 3 |
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2.12.3.13 Testibiopalladite PdTe(Sb,Te) P 213 2 3 |
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2.12.3.14 Changchengite! IrBiS P 213 2 3 |
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2.12.3.15 Milotaite! PdSbSe P 21/3 2 3 |
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2.12.3.16 IMA2004-047! PdAsSe Pa3 4/m 2/m 2/m |
Strunz Class: |
II/D.18-80 II - Sulfides and sulphosalts |
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II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold |
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II/D.18 - Cobaltite group, Cobaltite - Ullmannite - Tolovkite series |
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II/D.18-10 Cobaltite CoAsS P ca21 mm2 |
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II/D.18-20 Gersdorffite NiAsS P 213 2 3 |
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II/D.18-25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3 |
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II/D.18-30 Willyamite (Co,Ni)SbS P 213 2 3 |
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II/D.18-40 Ullmannite NiSbS P 213 2 3 |
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II/D.18-50 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3 |
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II/D.18-60 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3 |
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II/D.18-70 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3 |
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II/D.18-80 Tolovkite IrSbS P 213 2 3 |
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Other Tolovkite Information
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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 -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 - WWW-MINCRYST
13 -École des Mines de Paris
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Print or Cut-and-Paste your Tolovkite Specimen Label here :
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Tolovkite
IrSbS
Dana No: 2.12.3.5 Strunz No: II/D.18-80
Locality:
Notes:
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