| |
 |
Rhodostannite Mineral Data
|
|
|
General Rhodostannite Information
|
 Chemical Formula: |
Cu2FeSn3S8 |
| Composition: |
Molecular Weight = 851.44 gm |
| |
Iron 13.12 % Fe |
| |
Copper 14.93 % Cu |
| |
Tin 41.83 % Sn |
| |
Sulfur 30.13 % S |
| |
______ |
| |
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 |
| |
PDF 29-558 |
| |
Rhodostannite Image |
|
Images:
|
|
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 |
|
Rhodostannite Crystallography
|
| 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), |
| |
Physical Properties of Rhodostannite
|
| Color: |
Reddish gray. |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
| |
Optical Properties of Rhodostannite
|
| 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 |
 |
∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
29.10 |
30.40 |
|
|
|
| 420 nm |
28.70 |
29.90 |
|
| 440 nm |
28.30 |
29.40 |
|
| 460 nm |
28.20 |
29.30 |
|
| 480 nm |
28.20 |
29.40 |
|
| 500 nm |
28.30 |
29.80 |
|
| 520 nm |
28.50 |
30.20 |
|
| 540 nm |
28.80 |
30.40 |
|
| 560 nm |
28.90 |
30.60 |
|
| 580 nm |
28.90 |
30.80 |
|
| 600 nm |
28.90 |
30.80 |
|
| 620 nm |
28.90 |
30.80 |
|
| 640 nm |
28.80 |
30.70 |
|
| 660 nm |
28.80 |
30.70 |
|
| 680 nm |
28.70 |
30.50 |
|
| 700 nm |
28.60 |
30.30 |
|
Calculated Relative Intensity Colors of Rhodostannite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
310% |
| R1 |
|
|
|
|
|
|
|
|
|
|
| R2 |
|
|
|
|
|
|
|
|
|
|
|
| |
Calculated Properties of Rhodostannite
|
| Electron Density: |
Bulk Density (Electron Density)=4.70 gm/cc
note: Specific Gravity of Rhodostannite =5.16 gm/cc.
|
| 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.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rhodostannite is Not Radioactive |
| |
Rhodostannite Classification
|
| Dana Class: |
02.10.03.01 (02)Sulfides - Including Selenides and Tellurides |
| |
(02.10)where Am Bn Xp, with (m+n):p=3:4 |
| |
(02.10.03)Dana Group |
| |
02.10.03.01 Rhodostannite Cu2FeSn3S8 I 41/a 4/m |
| |
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 |
| |
02.D - Metal Sulfides, M:S = 3:4 and 2:3 |
| |
02.DA -M:S = 3:4 |
| |
02.DA.10 Rhodostannite Cu2FeSn3S8 I 41/a 4/m |
| |
02.DA.10 Toyohaite Ag2FeSn3S8 I 41/a 4/m |
| |
Other Rhodostannite Information
|
| 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
Search for Rhodostannite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Rhodostannite :
Ask about Rhodostannite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espaņol
Print or Cut-and-Paste your Rhodostannite Specimen Label here :
|
Rhodostannite
Cu2FeSn3S8
Dana No: 02.10.03.01 Strunz No: 02.DA.10
Locality:
Notes:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.