Tucekite Mineral Data

Tucekite Mineral Data +

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General Tucekite Information

Chemical Formula:

Ni9Sb2S8

Composition:

Molecular Weight = 1,028.24 gm

Nickel 51.37 % Ni

Antimony 23.68 % Sb

Sulfur 24.95 % S

______

100.00 %

Empirical Formula:

Ni₉Sb₂S₈

Environment:

In a hydrothermal deposit.

IMA Status:

Approved IMA 1978

Locality:

Kanowna, near Kalgoorlie, and the Whim Creek deposit, Western Australia, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for Karel Tucek, Curator of Minerals in the National Museum, Prague, Poland.

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Tucekite Crystallography

Axial Ratios:

a:c = 1:0.75299

Cell Dimensions:

a = 7.174, c = 5.402, Z = 1; V = 278.02 Den(Calc)= 6.14

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/mmm

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

By Intensity(I/I_o): 2.76(1), 2.28(0.8), 2.38(0.8),

Physical Properties of Tucekite

Cleavage:

None

Color:

Light yellow.

Diaphaniety:

Opaque

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.

Hardness:

6 - Orthoclase

Luster:

Metallic

Optical Properties of Tucekite

RL Anisotrophism:

Very strong to distinct, deep brown to grayish blue.

RL Color:

Brownish yellow.

RL Pleochroism:

Very weak to absent.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Tucekite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	37.50	38.20
420 nm	38.00	39.40
440 nm	38.60	41.00
460 nm	39.50	42.50
480 nm	40.70	44.00
500 nm	42.30	45.60
520 nm	44.00	47.00
540 nm	45.40	48.00
560 nm	46.60	48.80
580 nm	47.60	49.40
600 nm	48.40	50.10
620 nm	49.20	50.70
640 nm	49.90	51.40
660 nm	50.60	52.00
680 nm	51.20	52.60
700 nm	51.80	53.10

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

Calculated Properties of Tucekite

Electron Density:

r_electron=5.76 gm/cc
note: r_Tucekite=6.14 gm/cc.

Fermion Index

Fermion Index = 0.00767
Boson Index = 0.99233

Photoelectric:

PE_Tucekite= 96.88 barns/electron
U=PE_Tucekite x r_electron= 557.68 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tucekite is Not Radioactive

Tucekite Classification

Dana Class:

3.2.5.5 (3)Sulfides - Sulfosalts

(3.2)where z/y = 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(3.2.5)Hauchecornite Group, Complex Ni sulfides (Tetragonal: P4/nnn or I4/mmm)

3.2.5.1 Hauchecornite Ni9Bi(Sb,Bi)S8 P 4/mmm 4/m 2/m 2/m

3.2.5.2 Bismutohauchecornite Ni9Bi2S8 P 4/mmm 4/m 2/m 2/m

3.2.5.3 Tellurohauchecornite Ni9BiTeS8 P 4/mmm 4/m 2/m 2/m

3.2.5.4 Arsenohauchecornite Ni18Bi3AsS16 I 4/mmm 4/m 2/m 2/m

3.2.5.5 Tucekite Ni9Sb2S8 P 4/mmm 4/m 2/m 2/m

Strunz Class:

II/B.15-10 II - Sulfides and sulphosalts

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

II/B.15 - Hauchecornite group

II/B.15-10 Tucekite Ni9Sb2S8 P 4/mmm 4/m 2/m 2/m

II/B.15-20 Hauchecornite Ni9Bi(Sb,Bi)S8 P 4/mmm 4/m 2/m 2/m

II/B.15-30 Arsenohauchecornite Ni18Bi3AsS16 I 4/mmm 4/m 2/m 2/m

II/B.15-40 Tellurohauchecornite Ni9BiTeS8 P 4/mmm 4/m 2/m 2/m

II/B.15-50 Bismutohauchecornite Ni9Bi2S8 P 4/mmm 4/m 2/m 2/m

Other Tucekite Information

References:

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

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

Tucekite

Ni9Sb2S8
Dana No: 3.2.5.5 Strunz No: II/B.15-10
Locality:

Notes: