Ferrokesterite Mineral Data

General Ferrokesterite Information

Chemical Formula:

Cu2(Fe,Zn)SnS4

Composition:

Molecular Weight = 432.30 gm

Zinc 3.78 % Zn

Iron 9.69 % Fe

Copper 29.40 % Cu

Tin 27.46 % Sn

Sulfur 29.67 % S

______

100.00 %

Empirical Formula:

Cu₂Zn_0.25Fe²⁺_0.75SnS₄

IMA Status:

Approved IMA 1989

Locality:

Cligga mine, Cornwall, England. Link to MinDat.org Location Data.

Name Origin:

Named for its relationship to kesterite.

Name Pronunciation:

Ferrokesterite + Pronunciation

Synonym:

ICSD 26721

PDF 31-463

Ferrokesterite Image

Images:

Click Here for Larger Ferrokesterite Image

Ferrokesterite Andorite

Comments: Small, tetragonal crystal of gray ferrokesterite (circled in thumbnail) attached on the surface of a larger striated andorite specimen.
Location: San Jose mine, Oruro, Bolivia. Scale: Crystal size 0.2 mm.
© John Veevaert

Ferrokesterite Crystallography

Axial Ratios:

a:c = 1:2.00313

Cell Dimensions:

a = 5.427, c = 10.871, Z = 2; V = 320.18 Den(Calc)= 4.48

Crystal System:

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

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

By Intensity(I/I_o): 3.13(1), 1.919(0.5), 1.11(0.4),1.64(0.3), 1.04(0.1), 1.11(0.1), 1.25(0.1), 2.71(0.1), 4.86(0.1),

Physical Properties of Ferrokesterite

Cleavage:

{110} Distinct

Color:

Gray, Steel gray.

Diaphaneity:

Opaque

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Hardness:

4 - Fluorite

Luster:

Metallic

Streak:

black

Calculated Properties of Ferrokesterite

Electron Density:

Bulk Density (Electron Density)=4.12 gm/cc
note: Specific Gravity of Ferrokesterite =4.48 gm/cc.

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_{Ferrokesterite}= 102.24 barns/electron
U=PE_{Ferrokesterite} x rElectron Density= 421.69 barns/cc.

Radioactivity:

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

Ferrokesterite Classification

Dana Class:

02.09.02.10 (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 Ferrokesterite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8)

See Also:

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

Ferrokesterite

Cu2(Fe,Zn)SnS4
Dana No: 02.09.02.10 Strunz No: 02.CB.15a
Locality:

Notes: