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Roquesite Mineral Data
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General Roquesite Information
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 Chemical Formula: |
CuInS2 |
| Composition: |
Molecular Weight = 242.50 gm |
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Indium 47.35 % In |
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Copper 26.20 % Cu |
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Sulfur 26.45 % S |
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______ |
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100.00 % |
| Empirical Formula: |
CuInS2 |
| Environment: |
In association with copper sulfides in high-temperature Sn-W-Bi-Mo hydrothermal veins in highly metamorphosed rocks. Occures as inclusions in bornite. |
| IMA Status: |
Approved IMA 1963 |
| Locality: |
Charrier, Allier, France. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Maurice Roques, University of Clairmont-Gerrand, France. |
| Name Pronunciation: |
Roquesite + Pronunciation  |
| Synonym: |
ICSD 28739 |
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PDF 27-159 |
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Roquesite Image |
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Images:
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Roquesite
Comments: Polished section (PPL) showing bluish-gray, anhedral roquesite grains in violet-gray bornite, with blue covellite veinlets.
Location: Charrier, Allier, France.
Scale: Picture size 0.7 mm.
© Thomas Witzke |
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Roquesite Crystallography
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| Axial Ratios: |
a:c = 1:2.00544 |
| Cell Dimensions: |
a = 5.51, c = 11.05, Z = 4; V = 335.48 Den(Calc)= 4.80 |
| Crystal System: |
Tetragonal - Scalenohedral H-M Symbol (4 2m) Space Group: I 42d |
| X Ray Diffraction: |
By Intensity(I/Io): 3.16(1), 1.94(0.8), 1.66(0.6), |
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Physical Properties of Roquesite
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| Color: |
Gray. |
| Diaphaneity: |
Opaque |
| Habit: |
Inclusions - Generally found as inclusions in other minerals. |
| Hardness: |
3.5-4 - Copper Penny-Fluorite |
| Luster: |
Metallic |
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Optical Properties of Roquesite
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| RL Anisotrophism: |
Very weak. |
| RL Color: |
Gray with a slight bluish tint. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Roquesite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
27.10 |
27.20 |
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| 420 nm |
25.60 |
26.00 |
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| 440 nm |
24.10 |
24.80 |
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| 460 nm |
23.40 |
24.00 |
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| 480 nm |
23.00 |
23.40 |
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| 500 nm |
22.60 |
23.00 |
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| 520 nm |
22.50 |
22.70 |
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| 540 nm |
22.20 |
22.50 |
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| 560 nm |
22.20 |
22.40 |
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| 580 nm |
22.10 |
22.40 |
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| 600 nm |
22.10 |
22.40 |
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| 620 nm |
22.20 |
22.50 |
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| 640 nm |
22.30 |
22.60 |
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| 660 nm |
22.40 |
22.70 |
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| 680 nm |
22.60 |
22.90 |
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| 700 nm |
22.80 |
23.10 |
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Calculated Relative Intensity Colors of Roquesite in Air
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
| R1 |
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| R2 |
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Calculated Properties of Roquesite
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| Electron Density: |
Bulk Density (Electron Density)=4.35 gm/cc
note: Specific Gravity of Roquesite =4.80 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0019834803
Boson Index = 0.9980165197 |
| Photoelectric: |
PERoquesite = 149.04 barns/electron
U=PERoquesite x rElectron Density= 649.03 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Roquesite is Not Radioactive |
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Roquesite Classification
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| Dana Class: |
02.09.01.04 (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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(02.09.01)Chalcopyrite Group (Tetragonal: I-42d) |
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02.09.01.01 Chalcopyrite CuFeS2 I 42d 4 2m |
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02.09.01.02 Eskebornite CuFeSe2 I 42d 4 2m |
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02.09.01.03 Gallite CuGaS2 I 42d 4 2m |
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02.09.01.04 Roquesite CuInS2 I 42d 4 2m |
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02.09.01.05 Lenaite AgFeS2 P 42mc 4mm |
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02.09.01.06 Laforetite! AgInS2 I 42d 4 2m |
| Strunz Class: |
02.CB.10a 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.10a Chalcopyrite CuFeS2 I 42d 4 2m |
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02.CB.10a Eskebornite CuFeSe2 I 42d 4 2m |
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02.CB.10a Gallite CuGaS2 I 42d 4 2m |
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02.CB.10a Laforetite! AgInS2 I 42d 4 2m |
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02.CB.10a Lenaite AgFeS2 P 42mc 4mm |
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02.CB.10a Roquesite CuInS2 I 42d 4 2m |
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Other Roquesite 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 Roquesite :
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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Roquesite
CuInS2
Dana No: 02.09.01.04 Strunz No: 02.CB.10a
Locality:
Notes:
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