Carlsbergite Mineral Data

Carlsbergite Mineral Data

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General Carlsbergite Information

Chemical Formula:

CrN

Composition:

Molecular Weight = 66.00 gm

Chromium 78.78 % Cr

Nitrogen 21.22 % N

______

100.00 %

Empirical Formula:

CrN

Environment:

As minute platelets and grain boundary precipitates in kamacite and troilite, and as similar grains ringing daubreelite in iron meteorites.

IMA Status:

Approved IMA 1971

Locality:

Agpalilik (Cape York) iron meteorite. Link to MinDat.org Location Data.

Name Origin:

Named for the Carlsberg Foundation, Copenhagen, Denmark, which supported recovery and cutting of the Agpalilik meteorite.

Synonym:

ICSD 41827

PDF Nov-65

Carlsbergite Image

Images:

Click Here for Larger Carlsbergite Image

Carlsbergite Kamacite

Comments: Polished section showing a small light gray elongated inclusion of carlsbergite in massive kamacite.
Location: Kenton County meteorite, Kenton Co., Kentucky, USA. Scale: Picture size 0.08 mm.
© Thomas Witzke / Abraxas-Verlag

Carlsbergite Crystallography

Cell Dimensions:

a = 4.16, Z = 4; V = 71.99 Den(Calc)= 6.09

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): 2.068(1), 1.463(0.8), 2.394(0.8),0.846(0.6), 0.926(0.6), 1.249(0.6), 0.9496(0.5),

Crystal Structure:

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Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, rocksalt structure

Physical Properties of Carlsbergite

Color:

Gray.

Density:

5.9

Diaphaniety:

Opaque

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

7 - Quartz

Luster:

Metallic

Optical Properties of Carlsbergite

RL Color:

Light gray with a rose-violet tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Carlsbergite in Air**
λ	R	∑ R(λ)
481 nm	49.50
546 nm	41.50
590 nm	41.00
644 nm	40.50

**Calculated Relative Intensity Colors of Carlsbergite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	220%
R

Calculated Properties of Carlsbergite

Electron Density:

r_electron=5.72 gm/cc
note: r_Carlsbergite=6.09 gm/cc.

Fermion Index

Fermion Index = 0.28626
Boson Index = 0.71374

Photoelectric:

PE_Carlsbergite= 18.07 barns/electron
U=PE_Carlsbergite x r_electron= 103.39 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Carlsbergite is Not Radioactive

Carlsbergite Classification

Dana Class:

1.1.20.1 (1)Native Elements

(1.1)with metallic elements other than the platinum group

(1.1.20)Dana Group

1.1.20.1 Carlsbergite CrN F m3m 4/m 3 2/m

Strunz Class:

I/A.10-20 I - Elements

I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides

I/A.10 - Osbornite-Sinoite series

I/A.10-10 Osbornite TiN F m3m 4/m 3 2/m

I/A.10-20 Carlsbergite CrN F m3m 4/m 3 2/m

I/A.10-30 Roaldite (Fe,Ni)4N P 43m 4 3m

I/A.10-40 Siderazot Fe5N2 P 6₃22 6 2 2

I/A.10-45 Nierite Si3N4 P 3₁c 3m

I/A.10-50 Sinoite Si2N2O C mc2₁ mm2

Other Carlsbergite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)

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Carlsbergite

CrN
Dana No: 1.1.20.1 Strunz No: I/A.10-20
Locality:

Notes: