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Picotpaulite Mineral Data
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General Picotpaulite Information
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 Chemical Formula: |
TlFe2S3 |
| Composition: |
Molecular Weight = 412.28 gm |
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Thallium 49.57 % Tl |
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Iron 27.09 % Fe |
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Sulfur 23.33 % S |
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______ |
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100.00 % |
| Empirical Formula: |
TlFe2+2S3 |
| Environment: |
Ina hydrothermal ore deposit with other arsenic minerals. |
| IMA Status: |
Approved IMA 1970 |
| Locality: |
Allchar, Macedonia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Paul Picot (1931-), French mineralogist. |
| Name Pronunciation: |
Picotpaulite + Pronunciation  |
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Picotpaulite Image |
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Images:
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Picotpaulite Crystallography
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| Axial Ratios: |
a:b:c =0.5037:1:0.8432 |
| Cell Dimensions: |
a = 5.4, b = 10.72, c = 9.04, Z = 4; V = 523.31 Den(Calc)= 5.23 |
| Crystal System: |
Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: C 222 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.912(1), 4.26(0.9), 3.8(0.7), |
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Physical Properties of Picotpaulite
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| Color: |
Bronze. |
| Density: |
5.2 |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Habit: |
Platy - Sheet forms (e.g. micas). |
| Habit: |
Pseudo Hexagonal - Crystals show a hexagonal outline. |
| Hardness: |
2 - Gypsum |
| Luster: |
Metallic |
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Optical Properties of Picotpaulite
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| RL Anisotrophism: |
Strong, in gray-violet tints. |
| RL Color: |
Creamy white. |
| RL Pleochroism: |
Strong. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Picotpaulite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
23.50 |
28.70 |
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| 420 nm |
24.50 |
30.30 |
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| 440 nm |
25.50 |
31.90 |
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| 460 nm |
25.80 |
32.40 |
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| 480 nm |
25.40 |
32.00 |
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| 500 nm |
24.60 |
31.30 |
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| 520 nm |
24.30 |
31.00 |
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| 540 nm |
24.20 |
31.00 |
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| 560 nm |
24.40 |
31.40 |
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| 580 nm |
24.60 |
32.20 |
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| 600 nm |
25.20 |
33.10 |
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| 620 nm |
25.70 |
33.80 |
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| 640 nm |
26.50 |
34.70 |
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| 660 nm |
27.30 |
35.60 |
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| 680 nm |
28.20 |
36.60 |
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| 700 nm |
29.20 |
37.60 |
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Calculated Relative Intensity Colors of Picotpaulite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
360% |
| R1 |
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| R2 |
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Calculated Properties of Picotpaulite
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| Electron Density: |
Bulk Density (Electron Density)=4.59 gm/cc
note: Specific Gravity of Picotpaulite =5.23 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0074935311
Boson Index = 0.9925064689 |
| Photoelectric: |
PEPicotpaulite = 840.76 barns/electron
U=PEPicotpaulite x rElectron Density=3,860.95 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Picotpaulite is Not Radioactive |
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Picotpaulite Classification
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| Dana Class: |
02.09.12.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.09)where Am Bn Xp, with (m+n):p=1:1 |
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(02.09.12)Dana Group |
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02.09.12.01 Sternbergite AgFe2S3 C mma 2/m 2/m 2/m |
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02.09.12.02 Picotpaulite TlFe2S3 C 222 2 2 2 |
| Strunz Class: |
02.CB.60 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CB -With Zn, Fe, Cu, Ag, Au, etc |
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02.CB.60 Picotpaulite TlFe2S3 C 222 2 2 2 |
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02.CB.60 Raguinite TlFeS2 Unk Ortho |
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Other Picotpaulite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Picotpaulite :
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
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Print or Cut-and-Paste your Picotpaulite Specimen Label here :
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Picotpaulite
TlFe2S3
Dana No: 02.09.12.02 Strunz No: 02.CB.60
Locality:
Notes:
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