Bismutohauchecornite Mineral Data

General Bismutohauchecornite Information

Chemical Formula:

Ni9Bi2S8

Composition:

Molecular Weight = 1,202.70 gm

Nickel 43.92 % Ni

Bismuth 34.75 % Bi

Sulfur 21.33 % S

______

100.00 %

Empirical Formula:

Ni₉Bi₂S₈

Environment:

Hydrothermal origin, as secondary pore-fillings and replacements of sandstone and conglomerate.

IMA Status:

Approved IMA 1980

Locality:

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

Name Origin:

Named as the Bi analog of hauchecornite.

Name Pronunciation:

Bismutohauchecornite + Pronunciation

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Bismutohauchecornite Crystallography

Axial Ratios:

a:c = 1:0.79782

Cell Dimensions:

a = 7.37, c = 5.88, Z = 1; V = 319.38 Den(Calc)= 6.25

Crystal System:

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

Physical Properties of Bismutohauchecornite

Cleavage:

None

Color:

Bronze.

Diaphaneity:

Opaque

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

5.5 - Knife Blade

Luster:

Metallic

Streak:

grayish black

Optical Properties of Bismutohauchecornite

RL Anisotrophism:

Weak.

RL Pleochroism:

Moderate.

Calculated Properties of Bismutohauchecornite

Electron Density:

Bulk Density (Electron Density)=5.67 gm/cc
note: Specific Gravity of Bismutohauchecornite =6.25 gm/cc.

Fermion Index:

Fermion Index = 0.0065628659
Boson Index = 0.9934371341

Photoelectric:

PE_{Bismutohauchecornite}= 635.91 barns/electron
U=PE_{Bismutohauchecornite} x rElectron Density=3,608.61 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bismutohauchecornite is Not Radioactive

Bismutohauchecornite Classification

Dana Class:

03.02.05.02 (03)Sulfides - Sulfosalts

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

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

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

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

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

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

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

Strunz Class:

02.BB.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)

02.BB -With Ni, Fe

02.BB.10 Arsenohauchecornite Ni18Bi3AsS16 I 4/mmm 4/m 2/m 2/m

02.BB.10 Bismutohauchecornite Ni9Bi2S8 P 4/mmm 4/m 2/m 2/m

02.BB.10 Hauchecornite Ni9Bi(Sb,Bi)S8 P 4/mmm 4/m 2/m 2/m

02.BB.10 Tellurohauchecornite Ni9BiTeS8 P 4/mmm 4/m 2/m 2/m

02.BB.10 Tucekite Ni9Sb2S8 P 4/mmm 4/m 2/m 2/m

Other Bismutohauchecornite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Bismutohauchecornite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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

Bismutohauchecornite

Ni9Bi2S8
Dana No: 03.02.05.02 Strunz No: 02.BB.10
Locality:

Notes: