Siegenite Mineral Data

Siegenite Mineral Data +

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General Siegenite Information

Chemical Formula:

(Ni,Co)3S4

Composition:

Molecular Weight = 304.52 gm

Cobalt 14.51 % Co

Nickel 43.36 % Ni

Sulfur 42.12 % S

______

100.00 %

Empirical Formula:

Ni_2.25Co_0.75S₄

Environment:

In hydrothermal veins with other Cu-Ni-Fe sulfides.

IMA Status:

Valid Species (Pre-IMA) 1850

Locality:

Grube Jungfer, Müsen, Siegen district, Nordrhein-Westfalen, Germany. Link to MinDat.org Location Data.

Name Origin:

Named after its ore-bearing locality, Siegen, Germany.

Synonym:

ICSD 23773

PDF 24-334

Siegenite Image

Images:

Siegenite

Comments: Equant, dark gray, metallic crystals of siegenite on matrix.
Location: LaMotte mine, Fredericktown, Madison County, Missouri, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Images:

Siegenite Cattierite

Comments: Pinkish metallic cattierite, intergrown with gray siegenite.
Location: Shinkolobwe, Katanga, Shaba, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Siegenite Crystallography

Cell Dimensions:

a = 9.41, Z = 8; V = 833.24 Den(Calc)= 4.85

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

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

By Intensity(I/I_o): 2.86(1), 1.67(0.8), 2.36(0.7),

Forms:

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Forms: [ 1 1 0] [ 1 1 1]

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Crystal Structure:

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Huang C H , Knop O , Canadian Journal of Chemistry , 49 (1971) p.598-602, Chalkogenides of the transition elements. VIII A X-ray and, neutron diffraction study of the spinel CoNi2S4, Sample: examined with X-ray diffraction

View Additional jPOWD Structure files for Siegenite
[1]

Physical Properties of Siegenite

Cleavage:

[100] Imperfect, [010] Imperfect, [001] Imperfect

Color:

Violet gray, Copper red, Light gray, Steel gray.

Density:

4.5 - 4.8, Average = 4.65

Diaphaniety:

Opaque

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

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

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Metallic

Streak:

grayish black

Optical Properties of Siegenite

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Siegenite in Air**
λ	R	∑ R(λ)
400 nm	44.30
420 nm	44.50
440 nm	44.70
460 nm	45.00
480 nm	45.20
500 nm	45.50
520 nm	45.80
540 nm	46.20
560 nm	46.80
580 nm	47.50
600 nm	48.20
620 nm	49.10
640 nm	50.00
660 nm	51.00
680 nm	52.10
700 nm	53.10

**Calculated Relative Intensity Colors of Siegenite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	200%
R

Calculated Properties of Siegenite

Electron Density:

r_electron=4.69 gm/cc
note: r_Siegenite=4.85 gm/cc.

Fermion Index

Fermion Index = 0.00805
Boson Index = 0.99195

Photoelectric:

PE_Siegenite= 24.58 barns/electron
U=PE_Siegenite x r_electron= 115.27 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Siegenite is Not Radioactive

Siegenite Classification

Dana Class:

2.10.1.6 (2)Sulfides - Including Selenides and Tellurides

(2.10)where Am Bn Xp, with (m+n):p=3:4

(2.10.1)Linnaeite Group (Isometric: Fd3m)

2.10.1.1 Linnaeite CoCo2S4 F d3m 4/m 3 2/m

2.10.1.2 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m

2.10.1.3 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m

2.10.1.4 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m

2.10.1.5 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m

2.10.1.6 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m

2.10.1.7 Polydymite NiNi2S4 F d3m 4/m 3 2/m

2.10.1.8 Violarite FeNi2S4 F d3m 4/m 3 2/m

2.10.1.9 Trustedtite Ni3Se4 F d3m 4/m 3 2/m

2.10.1.10 Greigite FeFe2S4 F d3m 4/m 3 2/m

2.10.1.11 Daubreelite FeCr2S4 F d3m 4/m 3 2/m

2.10.1.12 Indite FeIn2S4 F d3m 4/m 3 2/m

2.10.1.13 Kalininite ZnCr2S4 F d3m 4/m 3 2/m

2.10.1.14 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m

2.10.1.15 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m

2.10.1.16 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m

2.10.1.17 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m

2.10.1.18 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m

2.10.1.19 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m

Strunz Class:

II/D.01-80 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.01 - Linneite group and related compounds

II/D.01-10 Greigite FeFe2S4 F d3m 4/m 3 2/m

II/D.01-20 Linnaeite CoCo2S4 F d3m 4/m 3 2/m

II/D.01-30 Polydymite NiNi2S4 F d3m 4/m 3 2/m

II/D.01-40 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m

II/D.01-50 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m

II/D.01-60 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m

II/D.01-70 Violarite FeNi2S4 F d3m 4/m 3 2/m

II/D.01-80 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m

II/D.01-90 Indite FeIn2S4 F d3m 4/m 3 2/m

II/D.01-95 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m

II/D.01-100 Daubreelite FeCr2S4 F d3m 4/m 3 2/m

II/D.01-110 Kalininite ZnCr2S4 F d3m 4/m 3 2/m

II/D.01-120 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m

II/D.01-130 Trustedtite Ni3Se4 F d3m 4/m 3 2/m

II/D.01-140 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m

Other Siegenite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

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Siegenite

(Ni,Co)3S4
Dana No: 2.10.1.6 Strunz No: II/D.01-80
Locality:

Notes: