Qusongite Mineral Data

General Qusongite Information

Chemical Formula:

Composition:

Molecular Weight = 197.91 gm

Chromium 0.53 % Cr

Tungsten 93.45 % W

Carbon 6.02 % C

______

100.00 %

Empirical Formula:

WCr_0.02C_0.99

Environment:

Heavy mineral concentrate from crushed chromite ore. Probable mantle origin.

IMA Status:

Approved IMA 2007 (Dana # Added)

Locality:

Luobusa mine, Qusong County, Tibet, China. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Synonym:

IMA2007-034

Tungsten Carbide

Qusongite Image

Images:

Qusongite

Comments: BSE image of qusongite (1, 2) and Cr2O3 (3, 4). The high hardness of qusongite shows up in the polished section as relief between the two minerals (AmMin, v94:389.
Location: Heavy mineral concentrate from chromite ores from the Luobusa ophiolite, Qusong County, Tibet, China. Scale: See Image.
© American Mineralogist

Qusongite Crystallography

Axial Ratios:

a:c = 1:0.97553

Cell Dimensions:

a = 2.902, c = 2.831, Z = 1; V = 20.65 Den(Calc)= 15.91

Crystal System:

Hexagonal - Ditrigonal DipyramidalH-M Symbol (6 m2) Space Group: P 6 2m

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

By Intensity(I/I_o): 2.511(0.94), 1.878(0.9), 2.833(0.44),1.291(0.36), 1.449(0.25), 0.9008(0.23), 1.149(0.23), 1.233(0.22),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
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Fang Q , Bai W , Yang J , Xu X , Li G , Shi N , Xiong M , Rong H , American Mineralogist , 94 (2009) p.387-290, Qusong (WC): A new mineral, Locality: Luobusa ophiolite, Qusong County, Tibet, China

Physical Properties of Qusongite

Cleavage:

None

Color:

Steel gray.

Diaphaneity:

Opaque

Habit:

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

Hardness:

9.5 - Silicon Carbide

Luster:

Metallic

Streak:

black

Optical Properties of Qusongite

RL Anisotrophism:

Medium from deep gray to light brown.

RL Color:

Steel gray with internal reflections.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Qusongite in Air**
λ	R	∑ R(λ)
400 nm	40.54
420 nm	36.55
440 nm	35.19
460 nm	38.28
470 nm	36.41
480 nm	38.95
500 nm	39.39
520 nm	41.42
540 nm	36.00
546 nm	38.10
560 nm	43.86
580 nm	42.21
589 nm	42.47
600 nm	42.79
620 nm	42.90
640 nm	43.26
650 nm	45.16
660 nm	45.17
680 nm	45.04
700 nm	38.61

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

Calculated Properties of Qusongite

Electron Density:

Bulk Density (Electron Density)=13.0 gm/cc
note: Specific Gravity of Qusongite =15.9 gm/cc.

Fermion Index:

Fermion Index = 0.13
Boson Index = 0.87

Photoelectric:

PE_Qusongite=1,233.78 barns/electron
U=PE_Qusongite x rElectron Density=16043.30 barns/cc.

Radioactivity:

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

Qusongite Classification

Dana Class:

01.01.25.01 (01)Native Elements

(01.01)with metallic elements other than the platinum group

(01.01.25)Dana Group

01.01.25.01 Qusongite! WC P 6 2m 6 m2

Strunz Class:

01.BA.25 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.25 Qusongite! WC P 6 2m 6 m2

Other Qusongite Information

References:

NAME( AmMin v94:387) PHYS. PROP.(AmMin v94:387) OPTIC PROP.(AmMin v94:387)

See Also:

Links to other databases for Qusongite :
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 Qusongite Specimen Label here :

Qusongite

WC
Dana No: 01.01.25.01 Strunz No: 01.BA.25
Locality:

Notes: