Stannite Mineral Data (original) (raw)
General Stannite Information
Chemical Formula:
Cu2FeSnS4
Composition:
Molecular Weight = 429.91 gm
Iron 12.99 % Fe
Copper 29.56 % Cu
Tin 27.61 % Sn
Sulfur 29.83 % S
______
100.00 %
Empirical Formula:
Cu2Fe2+SnS4
Environment:
In tin-bearing, hydrothermal vein deposits
IMA Status:
Valid Species (Pre-IMA) 1832
Locality:
Cornwall at Wheal Rock near St. Agnes. Link to MinDat.org Location Data.
Name Origin:
From the Latin stannum - "tin."
Name Pronunciation:
Stannite 
Synonym:
Bell metal ore
ICSD 200420
PDF 44-1476
Tin pyrites
Volfsonite
Stannite Image
Images:
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Stannite Volfsonite Comments: Stannite crystal cluster at the base of a quartz crystal. Volfsonite is now consideres stannite. Location: Yaogangxian mine, Hunan, China.Scale: Crystal size 3 cm. © John Attard |
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Images:
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Stannite Zinkenite Comments: Acicular crystals of zinkenite perched on a twinned, crystal of stannite. Location: Mina San José, Oruro, Bolivia.Scale: 4 x 2.3 x 1.7 cm. © Fabre Minerals |
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Images:
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Stannite Volfsonite Comments: Bluish-black octahedron of stannite (also known as volfsonite). Location: Yaogangxian Wolfram mine, Yizhang County, Hunan Province, China.Scale: See Image. © Rruff Database |
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Stannite Crystallography
Axial Ratios:
a:c = 1:1.9708
Cell Dimensions:
a = 5.4531, c = 10.747, Z = 2; V = 319.58 Den(Calc)= 4.47
Crystal System:
Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: I 42m
X Ray Diffraction:
By Intensity(I/Io): 3.134(1), 1.9145(0.3), 1.9288(0.25),
Forms:
Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
- Start-Stop Rotation
F - Fit to Screen
M - Menu
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| | Forms:( 1 1 2) ( 0 1 2) ( 1 1 0) ( 0 0 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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
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| | Hall S R , Szymanski J T , Stewart J M , The Canadian Mineralogist , 16 (1978) p.131-137, Kesterite, Cu2(Zn,Fe)SnS4, and stannite, Cu2(Fe,Zn)SnS4,, structurally similar but distinct minerals View Additional jPOWD Structure files for Stannite [1] [2] [3] [4] | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Stannite
Cleavage:
{110} Imperfect
Color:
Blue, Grayish black, Steel gray.
Density:
4.3 - 4.5, Average = 4.4
Diaphaneity:
Opaque
Fracture:
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Habit:
Crystalline - Fine - Occurs as well-formed fine sized crystals.
Habit:
Massive - Granular - Common texture observed in granite and other igneous rock.
Hardness:
3.5-4 - Copper Penny-Fluorite
Luminescence:
Non-fluorescent.
Luster:
Metallic
Magnetism:
Nonmagnetic
Streak:
black
Optical Properties of Stannite
RL Anisotrophism:
Distinct , in violet and slate-green.
RL Color:
Gray with olive-green tint.
RL Pleochroism:
Indistinct in air, distinct in oil.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Stannite in Air
| λ | R1 | R 2 |  |
∑ R1(λ) | ∑ R2(λ) |
|---|---|---|---|---|---|
| 400 nm | 18.50 | 20.40 |  |
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| 420 nm | 20.00 | 22.00 |  |
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| 440 nm | 21.50 | 23.60 |  |
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| 460 nm | 23.00 | 24.90 |  |
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| 480 nm | 24.30 | 26.00 |  |
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| 500 nm | 25.50 | 27.10 |  |
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| 520 nm | 26.50 | 28.00 |  |
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| 540 nm | 27.40 | 28.60 |  |
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| 560 nm | 28.00 | 29.00 |  |
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| 580 nm | 28.60 | 29.40 |  |
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| 600 nm | 28.80 | 29.50 |  |
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| 620 nm | 29.00 | 29.50 |  |
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| 640 nm | 28.80 | 29.20 |  |
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| 660 nm | 28.20 | 28.60 |  |
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| 680 nm | 27.60 | 27.80 |  |
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| 700 nm | 26.40 | 26.80 |  |
Calculated Relative Intensity Colors of Stannite in Air
| RelativeIntensity | 0% | 50% | 100% | 150% | 200% | 250% | 300% | 350% | 400% |
|---|---|---|---|---|---|---|---|---|---|
| R1 | |||||||||
| R2 |
Calculated Properties of Stannite
Electron Density:
Bulk Density (Electron Density)=4.12 gm/cc
note: Specific Gravity of Stannite =4.47 gm/cc.
Fermion Index:
Fermion Index = 0.05
Boson Index = 0.95
Photoelectric:
PEStannite = 101.81 barns/electron
U=PEStannite x rElectron Density= 419.18 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stannite is Not Radioactive
Stannite Classification
Dana Class:
02.09.02.01 (02)Sulfides - Including Selenides and Tellurides
(02.09)where Am Bn Xp, with (m+n):p=1:1
(02.09.02)Stannite Group (Tetragonal: I-42m) A2BCS type
02.09.02.01 Stannite Cu2FeSnS4 I 42m 4 2m
02.09.02.02 Cernyite Cu2CdSnS4 I 42m 4 2m
02.09.02.03 Briartite Cu2(Zn,Fe)GeS4 I 42m 4 2m
02.09.02.04 Kuramite Cu3SnS4 I 42m 4 2m
02.09.02.05 Sakuraiite (Cu,Zn,Fe,In,Sn)4S4 P 432, P 43m, or P m3m Cubic
02.09.02.06 Hocartite Ag2FeSnS4 I 42m 4 2m
02.09.02.07 Pirquitasite Ag2ZnSnS4 I 42m 4 2m
02.09.02.08 Velikite Cu2HgSnS4 I 42m 4 2m
02.09.02.09 Kesterite Cu2(Zn,Fe)SnS4 I 4 4
02.09.02.10 Ferrokesterite Cu2(Fe,Zn)SnS4 I 42m 4 2m
02.09.02.11 Barquillite! Cu2CdGeS4 I 42m 4 2m
Strunz Class:
02.CB.15a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
02.C - Metal Sulfides, M:S = 1:1 (and similar)
02.CB -With Zn, Fe, Cu, Ag, Au, etc
02.CB.15a Cernyite Cu2CdSnS4 I 42m 4 2m
02.CB.15a Ferrokesterite Cu2(Fe,Zn)SnS4 I 42m 4 2m
02.CB.15a Kesterite Cu2(Zn,Fe)SnS4 I 4 4
02.CB.15a Hocartite Ag2FeSnS4 I 42m 4 2m
02.CB.15a Idaite Cu5FeS6 P 63/mmc 6/m 2/m 2/m
02.CB.15a Kuramite Cu3SnS4 I 42m 4 2m
02.CB.15a Pirquitasite Ag2ZnSnS4 I 42m 4 2m
02.CB.15a Stannite Cu2FeSnS4 I 42m 4 2m
02.CB.15a Velikite Cu2HgSnS4 I 42m 4 2m
Other Stannite Information
References:
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
See Also:
Links to other databases for Stannite :
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 Stannite Specimen Label here :
Stannite
Cu2FeSnS4
Dana No: 02.09.02.01 Strunz No: 02.CB.15a
Locality:
Notes: