Linnaeite Mineral Data

Linnaeite Mineral Data +

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General Linnaeite Information

Chemical Formula:

Co++Co+++2S4

Composition:

Molecular Weight = 305.06 gm

Cobalt 57.95 % Co

Sulfur 42.05 % S

______

100.00 %

Empirical Formula:

CoCo₂S₄

Environment:

In hydrothermal veins with other cobalt and nickel sufides.

IMA Status:

Valid Species (Pre-IMA) 1845

Locality:

Bastnäs mines, Riddarhyttan, Västmanland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named after the Swedish botanist, C. Linne (1707-1778).

Synonym:

ICSD 24212

Linneite

PDF 42-1448

Linnaeite Image

Images:

Linnaeite

Comments: Brassy metallic octahedral crystal of linnaeite on matrix.
Location: Cobalt, Ontario, Canada. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Linnaeite Crystallography

Cell Dimensions:

a = 9.401, Z = 8; V = 830.85 Den(Calc)= 4.88

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): 2.83(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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Lundqvist D , Westgren A , Zeitschrift fur Anorganische und Allgemeine Chemie , 239 (1938) p.85-88, Rontgenuntersuchung des systems Co-S

Physical Properties of Linnaeite

Cleavage:

[100] Imperfect

Color:

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

Density:

4.8

Diaphaniety:

Opaque

Fracture:

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

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

4.5-5.5 - Near Apatite

Luminescence:

None.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

grayish black

Optical Properties of Linnaeite

Optical Data:

NCalc= 1.87 - from Gladstone-Dale relationship (KC = 0.1789) where Ncalc=Dcalc*KC+1
NCalc= 1.86 - from Gladstone-Dale relationship (KC = 0.1789) where Ncalc=Dmeas*KC+1

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Linnaeite in Air**
λ	R	∑ R(λ)
400 nm	44.10
420 nm	43.60
440 nm	43.10
460 nm	42.00
480 nm	42.50
500 nm	42.50
520 nm	43.10
540 nm	43.60
560 nm	43.90
580 nm	44.70
600 nm	45.20
620 nm	45.80
640 nm	46.40
660 nm	46.90
680 nm	47.50
700 nm	47.90

**Calculated Relative Intensity Colors of Linnaeite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%
R

Calculated Properties of Linnaeite

Electron Density:

r_electron=4.64 gm/cc
note: r_Linnaeite=4.88 gm/cc.

Fermion Index

Fermion Index = 0.00315
Boson Index = 0.99685

Photoelectric:

PE_Linnaeite= 22.24 barns/electron
U=PE_Linnaeite x r_electron= 103.20 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Linnaeite is Not Radioactive

Linnaeite Classification

Dana Class:

2.10.1.1 (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.01-20 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 Linnaeite Information

References:

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

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Print or Cut-and-Paste your Linnaeite Specimen Label here :

Linnaeite

Co++Co+++2S4
Dana No: 2.10.1.1 Strunz No: II/D.01-20
Locality:

Notes: