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Platarsite Mineral Data
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General Platarsite Information
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 Chemical Formula: |
(Pt,Rh,Ru)AsS |
| Composition: |
Molecular Weight = 265.01 gm |
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Arsenic 28.27 % As |
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Ruthenium 3.81 % Ru |
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Platinum 44.17 % Pt |
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Rhodium 11.65 % Rh |
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Sulfur 12.10 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Pt0.6Rh0.3Ru0.1AsS |
| Environment: |
In replacement pegmatite deposits. |
| IMA Status: |
Approved IMA 1977 |
| Locality: |
Onverwacht No. 330 mine, Lydenberg district, Transvaal, South Africa. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition, PLATinum and ARSenic. |
| Name Pronunciation: |
Platarsite + Pronunciation  |
| Synonym: |
ICSD 38427 |
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PDF 42-566 |
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Platarsite Image |
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Images:
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Platarsite
Comments: Coexisting platarsite (2) and sperrylite (1) included in a Pt-Fe alloy matrix. (CanMin, v15:385).
Location: Onverwacht mine, Transvaal, South Africa.
Scale: See Image.
© Canadian Mineralogist |
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Platarsite Crystallography
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| Cell Dimensions: |
a = 5.79, Z = 4; V = 194.10 Den(Calc)= 9.07 |
| Crystal System: |
Isometric - Diploidal H-M Symbol (2/m 3) Space Group: P a3 |
| X Ray Diffraction: |
By Intensity(I/Io): 1.746(1), 2.896(0.9), 3.345(0.8), |
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Physical Properties of Platarsite
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| Color: |
Gray. |
| Density: |
8 |
| Diaphaneity: |
Opaque |
| Habit: |
Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape. |
| Hardness: |
7.5 - Garnet |
| Luster: |
Metallic |
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Optical Properties of Platarsite
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| RL Color: |
Gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Platarsite in Air
| λ |
R |
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∑ R(λ) |
| 420 nm |
47.70 |
 |
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| 440 nm |
47.40 |
 |
| 460 nm |
47.30 |
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| 480 nm |
47.30 |
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| 500 nm |
47.10 |
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| 520 nm |
47.50 |
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| 540 nm |
48.00 |
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| 560 nm |
48.20 |
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| 580 nm |
48.70 |
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| 600 nm |
49.00 |
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| 620 nm |
48.90 |
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| 640 nm |
48.90 |
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| 660 nm |
49.50 |
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| 680 nm |
49.80 |
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| 700 nm |
49.60 |
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Calculated Relative Intensity Colors of Platarsite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
| R |
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Calculated Properties of Platarsite
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| Electron Density: |
Bulk Density (Electron Density)=7.78 gm/cc
note: Specific Gravity of Platarsite =9.07 gm/cc.
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| Fermion Index: |
Fermion Index = 0.16
Boson Index = 0.84 |
| Photoelectric: |
PEPlatarsite = 723.30 barns/electron
U=PEPlatarsite x rElectron Density=5,629.17 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Platarsite is Not Radioactive |
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Platarsite Classification
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| Dana Class: |
02.12.03.06 (02)Sulfides - Including Selenides and Tellurides |
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(02.12)where Am Bn Xp, with (m+n):p=1:2 |
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(02.12.03)Cobaltite Group (Cubic or pseudocubic crystals) |
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02.12.03.01 Cobaltite CoAsS P ca21 mm2 |
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02.12.03.02 Gersdorffite NiAsS P 213 2 3 |
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02.12.03.03 Ullmannite NiSbS P 213 2 3 |
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02.12.03.04 Willyamite (Co,Ni)SbS P 213 2 3 |
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02.12.03.05 Tolovkite IrSbS P 213 2 3 |
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02.12.03.06 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3 |
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02.12.03.07 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3 |
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02.12.03.08 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3 |
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02.12.03.09 Jolliffeite (Ni,Co)AsSe P a3 2/m 3 |
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02.12.03.10 Padmaite PdBiSe P 213 2 3 |
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02.12.03.11 Michenerite (Pd,Pt)BiTe P 213 2 3 |
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02.12.03.12 Maslovite PtBiTe P 213 2 3 |
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02.12.03.13 Testibiopalladite PdTe(Sb,Te) P 213 2 3 |
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02.12.03.14 Changchengite! IrBiS P 213 2 3 |
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02.12.03.15 Milotaite! PdSbSe P 21/3 2 3 |
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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 |
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02.E - Metal Sulfides, M:S � 1:2 |
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02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc. |
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02.EB.25 Cobaltite CoAsS P ca21 mm2 |
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02.EB.25 Changchengite! IrBiS P 213 2 3 |
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02.EB.25 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3 |
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02.EB.25 Gersdorffite NiAsS P 213 2 3 |
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02.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3 |
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02.EB.25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3 |
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02.EB.25 Krutovite NiAs2 P a3 2/m 3 |
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02.EB.25 Michenerite (Pd,Pt)BiTe P 213 2 3 |
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02.EB.25 Maslovite PtBiTe P 213 2 3 |
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02.EB.25 Mayingite IrBiTe P a3 2/m 3 |
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02.EB.25 Padmaite PdBiSe P 213 2 3 |
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02.EB.25 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3 |
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02.EB.25 Ullmannite NiSbS P 213 2 3 |
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02.EB.25 Tolovkite IrSbS P 213 2 3 |
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02.EB.25 Testibiopalladite PdTe(Sb,Te) P 213 2 3 |
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02.EB.25 Willyamite (Co,Ni)SbS P 213 2 3 |
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02.EB.25 Kalungaite! PdAsSe Pa3 2/m 3 |
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02.EB.25 Milotaite! PdSbSe P 21/3 2 3 |
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Other Platarsite 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 Platarsite :
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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Platarsite
(Pt,Rh,Ru)AsS
Dana No: 02.12.03.06 Strunz No: 02.EB.25
Locality:
Notes:
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