Cernyite Mineral Data (original) (raw)

General Cernyite Information

Help on Chemical Formula: Chemical Formula:

Cu2CdSnS4

Help on Composition: Composition:

Molecular Weight = 486.48 gm

Cadmium 23.11 % Cd

Copper 26.12 % Cu

Tin 24.40 % Sn

Sulfur 26.37 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Cu2CdSnS4

Help on Environment: Environment:

A rare constituent of complex zoned pegmatites, as a component of a very minor sulfide mineral suite.

Help on IMA Status: IMA Status:

Approved IMA 1978

Help on Locality: Locality:

In the Hugo pegmatite, 1.6 km south of Keystone. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

For Dr. Cerny, mineralogist at the University of Manitoba, Winnipeg, Canada.

Help on Synonym: Synonym:

ICSD 200421

IMA1976-057

PDF 29-537

Cernyite Image

Click Here for Larger Cernyite Image in a New Browser Window Images:

Click Here for Larger Cernyite Image Cernyite Comments: Gray massive, metallic cernyite. Location: Hugo Mine, Keystone, Keystone District, Pennington County, South Dakota, USA.Scale: See Image. © Rruff Database

Cernyite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:1.95673

Help on Cell Dimensions: Cell Dimensions:

a = 5.533, c = 10.8266, Z = 2; V = 331.45 Den(Calc)= 4.87

Help on Crystal System: Crystal System:

Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: I 42m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.167(1), 1.939(0.7), 1.662(0.5),

Click Here for Large Cernyite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Help on Above

| | Szymanski J T , The Canadian Mineralogist , 16 (1978) p.147-151, The crystal structure of cernyite, Cu2CdSnS4, a cadmium analogue of stannite, Note: z-coordinate for S atom changed in order to reproduce bond lengths. | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Cernyite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Gray, Steel gray.

Help on Density: Density:

4.776

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Hardness: Hardness:

4 - Fluorite

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

black

Optical Properties of Cernyite

Help on RL Anisotrophism: RL Anisotrophism:

Very weak in shades of gray.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Cernyite in Air

λ R1 R 2 ∑ R1(λ) ∑ R2(λ)
470 nm 24.60 25.50
546 nm 23.40 25.60
589 nm 22.30 25.00
650 nm 22.70 24.30

Calculated Relative Intensity Colors of Cernyite in Air

RelativeIntensity 0% 40% 80% 100% 120% 160% 200% 240% 280% 320% 360% 390%
R1
R2

Calculated Properties of Cernyite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=4.40 gm/cc
note: Specific Gravity of Cernyite =4.87 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.1
Boson Index = 0.9

Help on Photoelectric: Photoelectric:

PECernyite = 149.51 barns/electron
U=PECernyite x rElectron Density= 658.54 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cernyite is Not Radioactive

Cernyite Classification

Help on Dana Class: Dana Class:

02.09.02.02 (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

Help on Strunz Class: 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 Cernyite Information

Help on References: References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

Help on See Also: See Also:

Links to other databases for Cernyite :
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 Cernyite Specimen Label here :

Cernyite

Cu2CdSnS4
Dana No: 02.09.02.02 Strunz No: 02.CB.15a
Locality:

Notes: