Godlevskite Mineral Data

Godlevskite Mineral Data +

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General Godlevskite Information

Chemical Formula:

(Ni,Fe)9S8

Composition:

Molecular Weight = 781.90 gm

Iron 7.14 % Fe

Nickel 60.05 % Ni

Sulfur 32.81 % S

______

100.00 %

Empirical Formula:

Ni₈Fe²⁺S₈

Environment:

In hydrothermal veins, or in peridotite with other nickel sufides.

IMA Status:

Approved IMA 1969

Locality:

Zapolyarnyi mine, Norilsk, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Mikhail N. Godlevsky (1902-1984), Russian economic geologist.

Synonym:

ICSD 63080

PDF 22-1193

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Godlevskite Crystallography

Axial Ratios:

a:b:c =0.815:1:0.8396

Cell Dimensions:

a = 9.18, b = 11.263, c = 9.457, Z = 4; V = 977.80 Den(Calc)= 5.31

Crystal System:

Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: C 222

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

By Intensity(I/I_o): 2.85(1), 1.803(0.9), 1.795(0.8),

Crystal Structure:

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Fleet M E , Acta Crystallographica, Section C , 43 (1987) p.2255-2257, Structure of godlevskite, Ni9S8

Physical Properties of Godlevskite

Color:

Bronze yellow.

Density:

5.27

Diaphaniety:

Opaque

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

4-5 - Fluorite-Apatite

Luster:

Metallic

Streak:

gray

Optical Properties of Godlevskite

RL Anisotrophism:

Strong, from bluish to reddish.

RL Color:

Pale yellow.

RL Pleochroism:

Weak, pale cream to pinkish cream.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Godlevskite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	27.20	29.40
420 nm	32.60	36.00
440 nm	38.00	42.60
460 nm	42.20	46.30
480 nm	45.20	48.70
500 nm	47.80	50.30
520 nm	49.10	51.40
540 nm	50.50	52.20
560 nm	51.50	52.70
580 nm	52.40	53.00
600 nm	53.30	53.30
620 nm	54.20	53.70
640 nm	55.00	54.10
660 nm	55.80	54.70
680 nm	56.50	55.20
700 nm	57.20	55.80

**Calculated Relative Intensity Colors of Godlevskite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	230%
R₁
R₂

Calculated Properties of Godlevskite

Electron Density:

r_electron=5.13 gm/cc
note: r_Godlevskite=5.31 gm/cc.

Fermion Index

Fermion Index = 0.01076
Boson Index = 0.98924

Photoelectric:

PE_Godlevskite= 27.98 barns/electron
U=PE_Godlevskite x r_electron= 143.65 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Godlevskite is Not Radioactive

Godlevskite Classification

Dana Class:

2.7.4.1 (2)Sulfides - Including Selenides and Tellurides

(2.7)where Am Bn Xp, with (m+n):p=9:8

(2.7.4)Dana Group

2.7.4.1 Godlevskite (Ni,Fe)9S8 C 222 2 2 2

Strunz Class:

II/B.17-20 II - Sulfides and sulphosalts

II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Sulfides with predominant Nickel, Cobalt, Rhodium and Palladium and related compounds

II/B.17 - Mackinawite - Karaelakhite series

II/B.17-10 Mackinawite (Fe,Ni)S0.9 P 4/nmm 4/m 2/m 2/m

II/B.17-20 Godlevskite (Ni,Fe)9S8 C 222 2 2 2

II/B.17-30 Kharaelakhite (Pt,Cu,Pb,Fe,Ni)9S8 P mmm 2/m 2/m 2/m

Other Godlevskite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Godlevskite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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

Godlevskite

(Ni,Fe)9S8
Dana No: 2.7.4.1 Strunz No: II/B.17-20
Locality:

Notes: