Qingsongite
A valid IMA mineral species
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Formula:
BN
Hardness:
9 - 10
Specific Gravity:
3.46 (Calculated)
Crystal System:
Isometric
Name:
Named after Dr. Qingsong Fang (方青松) (1939-2010), professor at the Institute of Geology, Chinese Academy of Geological Sciences, who discovered the first diamonds in Tibet in the late 1970s (in the Luobusa chromitite), and who found the species yarlongite, zangboite, qusongite, and luobusaite.
Type Locality:
Isostructural with:
The natural analog of cubic boron nitride (c-BN), used industrially as an abrasive ("Borazon"), ever since first being synthesized in 1957, which was 52 years before the natural mineral was discovered in 2009.
Sphalerite structure type.
Sphalerite structure type.
Unique Identifiers
Mindat ID:
43792
Long-form identifier:
mindat:1:1:43792:7
GUID
(UUID V4):
(UUID V4):
51b63e64-cc62-4f21-aef6-dfdca8b6cf96
IMA Classification of Qingsongite
Approved
Approval year:
2013
First published:
2014
Classification of Qingsongite
1.BC.
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides, Phosphides and Hydrides
C : Nitrides
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides, Phosphides and Hydrides
C : Nitrides
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Qsg | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Qingsongite
Pronunciation:
Play | Recorded by | Country |
---|---|---|
Jolyon Ralph | United Kingdom |
Physical Properties of Qingsongite
Hardness:
9 - 10 on Mohs scale
Density:
3.46 g/cm3 (Calculated)
Comment:
Calculated for the mean composition B1.100N0.900
Chemistry of Qingsongite
Mindat Formula:
BN
Elements listed:
Crystallography of Qingsongite
Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
F4 3m
Cell Parameters:
a = 3.61 Å
Unit Cell V:
47.05 ų (Calculated from Unit Cell)
Morphology:
Isolated anhedral single crystals up to 1 μm in size.
Comment:
a = 3.61 ± 0.045 Å. Synthetic analog has space group F4̄3m
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0011512 | Qingsongite | Wyckoff R W G (1963) Second edition. Interscience Publishers, New York, New York Crystal Structures 1 85-237 | 1963 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.088 Å | (100) |
1.808 Å | (8) |
1.277 Å | (20) |
1.090 Å | (10) |
0.904 Å | (3) |
0.830 Å | (8) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3a: Earth’s earliest Hadean crust | >4.50 |
7 : Ultramafic igneous rocks | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
36 : Carbonatites, kimberlites, and related igneous rocks | |
Stage 5: Initiation of plate tectonics | <3.5-2.5 |
38 : Ophiolites | |
39 : High-𝑃 metamorphism (blueschist, eclogite, ultrahigh 𝑃 facies) |
Type Occurrence of Qingsongite
General Appearance of Type Material:
Isolated anhedral single crystals from 100 nm up to 1 μm in size in chromitite.
Place of Conservation of Type Material:
Geological Museum of China, Xisi, West District, Beijing, PRC, catalogue number M 11843.
Geological Setting of Type Material:
Ophiolite, derived from ~300 km deep in the mantle.
Associated Minerals at Type Locality:
Reference:
Dobrzhinetskaya, L.F., Wirth, R., Yang, J., Green, H.W., Hutcheon, I.D., Weber, P.K. and Grew, E.S. (2014) Qingsongite, natural cubic boron nitride: The first boron mineral from the Earth’s mantle. American Mineralogist: 99: 764-772.
Synonyms of Qingsongite
Related Minerals - Strunz-mindat Grouping
1.BC. | UM2007-16-N:Ti | Ti7N3 |
1.BC. | Oreillyite | Cr2N |
1.BC.05 | Roaldite | (Fe,Ni)4N |
1.BC.10 | Siderazot | FeNx to Fe3N1.33 |
1.BC.15 | Carlsbergite | CrN |
1.BC.15 | Osbornite | TiN |
1.BC.15 | Uakitite | VN |
1.BC.20 | UM2006-34-N:Ga | GaN |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Qingsongite
mindat.org URL:
https://www.mindat.org/min-43792.html
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References for Qingsongite
Localities for Qingsongite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
China (TL) | |
| Williams et al. (2013) +2 other references |
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