Isovite Mineral Data

General Isovite Information

Chemical Formula:

(Cr,Fe)23C6

Composition:

Molecular Weight = 1,249.48 gm

Chromium 67.41 % Cr

Iron 26.82 % Fe

Carbon 5.77 % C

______

100.00 %

Empirical Formula:

Cr_16.2Fe⁰⁺₆C₆

Environment:

The chromium dominant analog of haxonite. Found in gold-platinum placer concentrates

IMA Status:

Approved IMA 1996 (Dana # Added)

Locality:

The Is River, near the town of Is, Isovsky district, Middle Urals, Russia. Link to MinDat.org Location Data.

Name Origin:

For the locality.

Synonym:

IMA1996-039

Isovite Image

Images:

Isovite

Comments: Dark gray metallic grain of isovite.
Location: Verkhneivinsk, Sverdlovskaya Oblast', Urals Region, Russia. Scale: Grain size 0.7 mm.
© Thomas Witzke / Abraxas-Verlag

Isovite Crystallography

Cell Dimensions:

a = 10.65, Z = 4; V = 1,207.95 Den(Calc)= 6.87

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m

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

By Intensity(I/I_o): 2.05(1), 2.17(0.5), 2.38(0.3),

Physical Properties of Isovite

Color:

Iron gray.

Diaphaneity:

Opaque

Fracture:

Brittle - Irregular - Very brittle fracture producing irregular fragments

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

8 - Topaz

Luster:

Metallic

Magnetism:

Ferromagnetic

Optical Properties of Isovite

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Isovite in Air**
λ	R	∑ R(λ)
460 nm	46.70
480 nm	42.40
540 nm	43.90
560 nm	43.30
580 nm	47.60
600 nm	47.40
640 nm	46.20
660 nm	45.30

**Calculated Relative Intensity Colors of Isovite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	200%
R

Calculated Properties of Isovite

Electron Density:

Bulk Density (Electron Density)=6.39 gm/cc
note: Specific Gravity of Isovite =6.87 gm/cc.

Fermion Index:

Fermion Index = 0.07
Boson Index = 0.93

Photoelectric:

PE_Isovite= 23.92 barns/electron
U=PE_Isovite x rElectron Density= 152.77 barns/cc.

Radioactivity:

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

Isovite Classification

Dana Class:

01.01.16.03 (01)Native Elements

(01.01)with metallic elements other than the platinum group

(01.01.16)Dana Group

01.01.16.01 Cohenite (Fe,Ni,Co)3C Pbnm 2/m 2/m 2/m

01.01.16.02 Haxonite (Fe,Ni)23C6 F m3m 4/m 3 2/m

01.01.16.03 Isovite! (Cr,Fe)23C6 F m3m 4/m 3 2/m

Strunz Class:

01.BA.10 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)

01.B - Metallic Carbides, Silicides, Nitrides and Phosphides

01.BA -Carbides

01.BA.10 Isovite! (Cr,Fe)23C6 F m3m 4/m 3 2/m

01.BA.10 Haxonite (Fe,Ni)23C6 F m3m 4/m 3 2/m

Other Isovite Information

References:

NAME( MinRec, V 31, No. 2) PHYS. PROP.(MinRec, V 31, No. 2) OPTIC PROP.(AmMin, v 84, p 1686)

See Also:

Links to other databases for Isovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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

Isovite

(Cr,Fe)23C6
Dana No: 01.01.16.03 Strunz No: 01.BA.10
Locality:

Notes: