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:

Click Here for Larger Rhodostannite Image

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 - DipyramidalH-M Symbol (4/m) Space Group: I 4₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.12(1), 5.93(0.6), 2.58(0.5),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Jumas J C , Philippot E , Maurin M , Acta Crystallographica, Section B , 35 (1979) p.2195-2197, Structure du rhodostannite synthetique, Locality: synthetic

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:

PE_{Rhodostannite}= 139.14 barns/electron
U=PE_{Rhodostannite} 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

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Ask about Rhodostannite here :
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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: