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Rhodostannite Mineral Data
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General Rhodostannite Information
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 Chemical Formula: |
Cu2FeSn3S8 |
| Composition: |
Molecular Weight = 851.44 gm |
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Iron 13.12 % Fe |
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Copper 14.93 % Cu |
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Tin 41.83 % Sn |
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Sulfur 30.13 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cu22(Fe2+)Sn3S8 |
| Environment: |
As a replacement (alteration) product of stannite. |
| IMA Status: |
Approved IMA 1968 |
| Locality: |
Vila Apacheta, Bolivia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for its reddish color compared to stannite. |
| Name Pronunciation: |
Rhodostannite + Pronunciation  |
| Synonym: |
ICSD 8215 |
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PDF 29-558 |
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Rhodostannite Image |
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Images:
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Rhodostannite Hocartite
Comments: B&W image of hocartite (hc) and rhodostannite (r) in sphalerite (s) and pyrite (p). (Mineralogical Journal, v15:222).
Location: Toyoha mine, SW Sapporo City, Hokkaido, Japan.
Scale: Scale Bar 50µm.
© Mineralogical Journal |
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Rhodostannite Crystallography
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| Axial Ratios: |
a:c = 1:1.41426 |
| Cell Dimensions: |
a = 7.29, c = 10.31, Z = 2; V = 547.92 Den(Calc)= 5.16 |
| Crystal System: |
Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 41/a |
| X Ray Diffraction: |
By Intensity(I/Io): 3.12(1), 5.93(0.6), 2.58(0.5), |
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Physical Properties of Rhodostannite
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| Color: |
Reddish gray. |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
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Optical Properties of Rhodostannite
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| RL Anisotrophism: |
Distinct , from bluish gray to dark brown. |
| RL Color: |
Reddish. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Rhodostannite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
29.10 |
30.40 |
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| 420 nm |
28.70 |
29.90 |
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| 440 nm |
28.30 |
29.40 |
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| 460 nm |
28.20 |
29.30 |
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| 480 nm |
28.20 |
29.40 |
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| 500 nm |
28.30 |
29.80 |
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| 520 nm |
28.50 |
30.20 |
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| 540 nm |
28.80 |
30.40 |
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| 560 nm |
28.90 |
30.60 |
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| 580 nm |
28.90 |
30.80 |
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| 600 nm |
28.90 |
30.80 |
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| 620 nm |
28.90 |
30.80 |
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| 640 nm |
28.80 |
30.70 |
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| 660 nm |
28.80 |
30.70 |
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| 680 nm |
28.70 |
30.50 |
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| 700 nm |
28.60 |
30.30 |
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Calculated Relative Intensity Colors of Rhodostannite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
310% |
| R1 |
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| R2 |
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Calculated Properties of Rhodostannite
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| Electron Density: |
Bulk Density (Electron Density)=4.70 gm/cc
note: Specific Gravity of Rhodostannite =5.16 gm/cc.
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| Fermion Index: |
Fermion Index = 0.07
Boson Index = 0.93 |
| Photoelectric: |
PERhodostannite = 139.14 barns/electron
U=PERhodostannite x rElectron Density= 654.35 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rhodostannite is Not Radioactive |
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Rhodostannite Classification
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| Dana Class: |
02.10.03.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.10)where Am Bn Xp, with (m+n):p=3:4 |
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(02.10.03)Dana Group |
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02.10.03.01 Rhodostannite Cu2FeSn3S8 I 41/a 4/m |
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02.10.03.02 Toyohaite Ag2FeSn3S8 I 41/a 4/m |
| Strunz Class: |
02.DA.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.D - Metal Sulfides, M:S = 3:4 and 2:3 |
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02.DA -M:S = 3:4 |
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02.DA.10 Rhodostannite Cu2FeSn3S8 I 41/a 4/m |
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02.DA.10 Toyohaite Ag2FeSn3S8 I 41/a 4/m |
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Other Rhodostannite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Rhodostannite :
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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Print or Cut-and-Paste your Rhodostannite Specimen Label here :
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Rhodostannite
Cu2FeSn3S8
Dana No: 02.10.03.01 Strunz No: 02.DA.10
Locality:
Notes:
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