Krutovite Mineral Data

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General Krutovite Information

Chemical Formula:

NiAs2

Composition:

Molecular Weight = 208.53 gm

Nickel 28.14 % Ni

Arsenic 71.86 % As

______

100.00 %

Empirical Formula:

NiAs₂

Environment:

In Cu-Ni-As veins of hydrothermal origin

IMA Status:

Approved IMA 1976

Locality:

Potûcky (Breitenbach), Krusne Hory (Erzgebirge), Západoceský Kraj, Bohemia, Czech Republic. Link to MinDat.org Location Data.

Name Origin:

Named for Georgi Alekseevich Krutov, Professor of Mineralogy, Moscow Gosdarst Univeristy, Moscow, Russia.

Name Pronunciation:

Krutovite + Pronunciation

Synonym:

ICSD 42569

PDF 29-928

Krutovite Image

Images:

Krutovite

Comments: Gray silivery metallic krutovite grains in matrix.
Location: Belorechensk, Krasnodarskij oblast, southeast of Krasnodar, Russia. Scale: Specimen Size 5x2 cm.
© Diederik Visser

Krutovite Crystallography

Cell Dimensions:

a = 5.794, Z = 4; V = 194.51 Den(Calc)= 7.12

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): 2.593(1), 1.746(0.8), 2.365(0.8),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Munson R A , Inorganic Chemistry , 7 (1968) p.389-390, The synthesis of iridium disulfide and nickel diarsenide having the pyrite structure, Locality: synthetic

Physical Properties of Krutovite

Color:

Gray white.

Diaphaneity:

Opaque

Hardness:

5.5 - Knife Blade

Luster:

Metallic

Optical Properties of Krutovite

RL Color:

Bright white with a rose tint, paler than associated nickel-skutterudite.

Calculated Properties of Krutovite

Electron Density:

Bulk Density (Electron Density)=6.42 gm/cc
note: Specific Gravity of Krutovite =7.12 gm/cc.

Fermion Index:

Fermion Index = 0.0031802946
Boson Index = 0.9968197054

Photoelectric:

PE_Krutovite= 63.48 barns/electron
U=PE_Krutovite x rElectron Density= 407.45 barns/cc.

Radioactivity:

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

Krutovite Classification

Dana Class:

02.12.01.12 (02)Sulfides - Including Selenides and Tellurides

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

(02.12.01)Pyrite Group (Isometric: Pa3)

02.12.01.01 Pyrite FeS2 P a3 2/m 3

02.12.01.02 Vaesite NiS2 P a3 2/m 3

02.12.01.03 Cattierite CoS2 P a3 2/m 3

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

02.12.01.05 Trogtalite CoSe2 P a3 2/m 3

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

02.12.01.07 Fukuchilite Cu3FeS8 P a3 2/m 3

02.12.01.08 Krutaite CuSe2 P a3 2/m 3

02.12.01.09 Hauerite MnS2 P a3 2/m 3

02.12.01.10 Laurite RuS2 P a3 2/m 3

02.12.01.11 Aurostibite AuSb2 P a3 2/m 3

02.12.01.12 Krutovite NiAs2 P a3 2/m 3

02.12.01.13 Sperrylite PtAs2 P a3 2/m 3

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

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

02.12.01.16 Erlichmanite OsS2 P a3 2/m 3

02.12.01.17 Dzharkenite FeSe2 P a3 2/m 3

02.12.01.18 Gaotaiite Ir3Te8 P a3 2/m 3

02.12.01.19 Mayingite IrBiTe P a3 2/m 3

Strunz Class:

02.EB.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.E - Metal Sulfides, M:S £ 1:2

02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.

02.EB.25 Cobaltite CoAsS P ca2₁ mm2

02.EB.25 Changchengite! IrBiS P 2₁3 2 3

02.EB.25 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3

02.EB.25 Gersdorffite NiAsS P 2₁3 2 3

02.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3

02.EB.25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3

02.EB.25 Krutovite NiAs2 P a3 2/m 3

02.EB.25 Michenerite (Pd,Pt)BiTe P 2₁3 2 3

02.EB.25 Maslovite PtBiTe P 2₁3 2 3

02.EB.25 Mayingite IrBiTe P a3 2/m 3

02.EB.25 Padmaite PdBiSe P 2₁3 2 3

02.EB.25 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3

02.EB.25 Ullmannite NiSbS P 2₁3 2 3

02.EB.25 Tolovkite IrSbS P 2₁3 2 3

02.EB.25 Testibiopalladite PdTe(Sb,Te) P 2₁3 2 3

02.EB.25 Willyamite (Co,Ni)SbS P 2₁3 2 3

02.EB.25 Kalungaite! PdAsSe Pa3 2/m 3

02.EB.25 Milotaite! PdSbSe P 2₁/3 2 3

Other Krutovite Information

References:

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

See Also:

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

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

Krutovite

NiAs2
Dana No: 02.12.01.12 Strunz No: 02.EB.25
Locality:

Notes: