Vaesite Mineral Data

Vaesite Mineral Data +

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General Vaesite Information

Chemical Formula:

NiS2

Composition:

Molecular Weight = 122.82 gm

Nickel 47.78 % Ni

Sulfur 52.22 % S

______

100.00 %

Empirical Formula:

NiS₂

Environment:

Disseminated through dolomite (Kasompi mine, Zaire); as a secondary alteration product of arsenic-deficient nickel skutterudite (Germany)

IMA Status:

Valid Species (Pre-IMA) 1945

Locality:

Kasompi mine, Katanga (Shaba), Congo (Zaire). Link to MinDat.org Location Data.

Name Origin:

Named for Johannes Vaes, mineralogist for the Union Miniere du Haut Katanga.

Synonym:

ICSD 79671

PDF Nov-99

Vaesite Image

Images:

Vaesite

Comments: Metallic black vaesite microcrystals.
Location: Ca'de Ladri, Bologna, Emilia-Romagna, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Vaesite Crystallography

Cell Dimensions:

a = 5.6793, Z = 4; V = 183.18 Den(Calc)= 4.45

Crystal System:

Isometric - DiploidalH-M Symbol (2/m 3) Space Group: P a3

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

By Intensity(I/I_o): 2.83(1), 1.71(0.8), 1.09(0.6),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Nowack E , Schwarzenbach D , Hahn T , Acta Crystallographica, Section B , 47 (1991) p.650-659, Charge densities in CoS2 and NiS2 (pyrite structure), Note: multipole model, T = 135 K, Locality: synthetic

View Additional jPOWD Structure files for Vaesite
[1] [2]

Physical Properties of Vaesite

Cleavage:

[001] Perfect

Color:

Black, Steel gray, Tin white.

Density:

4.45

Diaphaniety:

Opaque

Habit:

Disseminated - Occurs in small, distinct particles dispersed in matrix.

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

4.5-5.5 - Near Apatite

Luster:

Metallic

Optical Properties of Vaesite

RL Color:

Gray, pale violet.

RL Pleochroism:

None.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Vaesite in Air**
λ	R	∑ R(λ)
400 nm	35.00
420 nm	34.30
440 nm	33.60
460 nm	33.00
480 nm	32.50
500 nm	32.00
520 nm	31.80
540 nm	31.60
560 nm	31.50
580 nm	31.50
600 nm	31.60
620 nm	31.80
640 nm	32.00
660 nm	32.40
680 nm	33.00
700 nm	33.60

**Calculated Relative Intensity Colors of Vaesite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	270%	280%
R

Calculated Properties of Vaesite

Electron Density:

r_electron=4.35 gm/cc
note: r_Vaesite=4.45 gm/cc.

Fermion Index

Fermion Index = 0.00931
Boson Index = 0.99069

Photoelectric:

PE_Vaesite= 21.79 barns/electron
U=PE_Vaesite x r_electron= 94.75 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Vaesite is Not Radioactive

Vaesite Classification

Dana Class:

2.12.1.2 (2)Sulfides - Including Selenides and Tellurides

(2.12)where Am Bn Xp, with (m+n):p=1:2

(2.12.1)Pyrite Group (Isometric: Pa3)

2.12.1.1 Pyrite FeS2 P a3 2/m 3

2.12.1.2 Vaesite NiS2 P a3 2/m 3

2.12.1.3 Cattierite CoS2 P a3 2/m 3

2.12.1.4 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3

2.12.1.5 Trogtalite CoSe2 P a3 2/m 3

2.12.1.6 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3

2.12.1.7 Fukuchilite Cu3FeS8 P a3 2/m 3

2.12.1.8 Krutaite CuSe2 P a3 2/m 3

2.12.1.9 Hauerite MnS2 P a3 2/m 3

2.12.1.10 Laurite RuS2 P a3 2/m 3

2.12.1.11 Aurostibite AuSb2 P a3 2/m 3

2.12.1.12 Krutovite NiAs2 P a3 2/m 3

2.12.1.13 Sperrylite PtAs2 P a3 2/m 3

2.12.1.14 Geversite Pt(Sb,Bi)2 P a3 2/m 3

2.12.1.15 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3

2.12.1.16 Erlichmanite OsS2 P a3 2/m 3

2.12.1.17 Dzharkenite FeSe2 P a3 2/m 3

2.12.1.18 Gaotaiite Ir3Te8 P a3 2/m 3

2.12.1.19 Mayingite IrBiTe P a3 2/m 3

Strunz Class:

II/D.17-50 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.17 - Pyrite group and related compounds, Fukuchilite - Micherenite

II/D.17-10 Fukuchilite Cu3FeS8 P a3 2/m 3

II/D.17-20 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3

II/D.17-30 Pyrite FeS2 P a3 2/m 3

II/D.17-40 Cattierite CoS2 P a3 2/m 3

II/D.17-50 Vaesite NiS2 P a3 2/m 3

II/D.17-60 Hauerite MnS2 P a3 2/m 3

II/D.17-65 Dzharkenite FeSe2 P a3 2/m 3

II/D.17-70 Krutaite CuSe2 P a3 2/m 3

II/D.17-80 Trogtalite CoSe2 P a3 2/m 3

II/D.17-90 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3

II/D.17-100 Laurite RuS2 P a3 2/m 3

II/D.17-110 Erlichmanite OsS2 P a3 2/m 3

II/D.17-120 Sperrylite PtAs2 P a3 2/m 3

II/D.17-130 Aurostibite AuSb2 P a3 2/m 3

II/D.17-140 Geversite Pt(Sb,Bi)2 P a3 2/m 3

II/D.17-150 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3

II/D.17-153 Changchengite! IrBiS P 2₁3 2 3

II/D.17-155 Mayingite IrBiTe P a3 2/m 3

II/D.17-160 Maslovite PtBiTe P 2₁3 2 3

II/D.17-170 Testibiopalladite PdTe(Sb,Te) P 2₁3 2 3

II/D.17-175 Padmaite PdBiSe P 2₁3 2 3

II/D.17-180 Michenerite (Pd,Pt)BiTe P 2₁3 2 3

Other Vaesite Information

References:

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

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Vaesite

NiS2
Dana No: 2.12.1.2 Strunz No: II/D.17-50
Locality:

Notes: