Hauchecornite Mineral Data

Hauchecornite Mineral Data +

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General Hauchecornite Information

Chemical Formula:

Ni9Bi(Sb,Bi)S8

Composition:

Molecular Weight = 1,137.28 gm

Nickel 46.45 % Ni

Bismuth 22.97 % Bi

Antimony 8.03 % Sb

Sulfur 22.56 % S

______

100.00 %

Empirical Formula:

Ni₉Bi_1.25Sb_0.75S₈

Environment:

Hydrothermal origin.

IMA Status:

Valid Species (Pre-IMA) 1893

Locality:

From the Friedrich mine, near Wissen, North Rhine-Westphalia, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for William Hauchecorn (1828-1900), Director of the Geological Survey and the Mining Academy, Berlin, Germany.

Synonym:

ICSD 40055

PDF 6-457

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Hauchecornite Crystallography

Axial Ratios:

a:c = 1:0.74074

Cell Dimensions:

a = 7.29, c = 5.4, Z = 1; V = 286.98 Den(Calc)= 6.58

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): 2.79(1), 2.3(0.6), 2.39(0.6),

Crystal Structure:

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Kocman V , Nuffield E W , The Canadian Mineralogist , 12 (1974) p.269-274, The crystal structure of antimonian hauchecornite from Westphalia, Locality: Westphalia

Physical Properties of Hauchecornite

Cleavage:

None

Color:

Bronze, Brown, Dark.

Density:

6.36

Diaphaniety:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

5 - Apatite

Luster:

Metallic

Streak:

grayish black

Optical Properties of Hauchecornite

RL Anisotrophism:

Distinct.

RL Pleochroism:

Very weak in air, more distinct in oil.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Hauchecornite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	35.80	37.90
420 nm	37.20	39.30
440 nm	38.60	40.70
460 nm	40.00	42.20
480 nm	41.40	43.80
500 nm	42.70	45.40
520 nm	44.00	46.90
540 nm	45.20	48.20
560 nm	46.30	49.30
580 nm	47.30	50.20
600 nm	48.20	51.00
620 nm	49.00	51.70
640 nm	49.70	52.30
660 nm	50.40	52.90
680 nm	51.00	53.40
700 nm	51.50	53.90

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

Calculated Properties of Hauchecornite

Electron Density:

r_electron=6.04 gm/cc
note: r_{Hauchecornite}=6.58 gm/cc.

Fermion Index

Fermion Index = 0.00694
Boson Index = 0.99306

Photoelectric:

PE_{Hauchecornite}= 449.26 barns/electron
U=PE_{Hauchecornite} x r_electron=2,713.69 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hauchecornite is Not Radioactive

Hauchecornite Classification

Dana Class:

3.2.5.1 (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.15-20 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 Hauchecornite Information

References:

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

See Also:

Links to other databases for Hauchecornite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Hauchecornite

Ni9Bi(Sb,Bi)S8
Dana No: 3.2.5.1 Strunz No: II/B.15-20
Locality:

Notes: