Article
Licensed
Unlicensed
Requires Authentication
Qusongite (WC): A new mineral
-
Qingsong Fang
,
Wenji Bai
Published/Copyright:
April 1, 2015
Abstract
An unusual group of mantle minerals including about 70-80 species has been recovered from podiform chromitites of the Luobusa ophiolite, Qusong County, Tibet, China. All of the minerals were hand picked from heavy mineral separates of the chromitite. The minerals include diamond, coesite, moissanite, wüstite, intermetallic compounds, Os-Ir alloys with diamond inclusions, Fe-silicides, and a new mineral, qusongite. Qusongite is associated with chromian chlorite, calcite, (W,Ti)C and (Ti,W) C alloys, and chromite. It occurs as angular grains generally 4-8 μm in diameter, but some are as large as 0.2 × 0.3 × 0.25 mm. The grains are opaque and steel-gray with a metallic luster and grayish-yellow reflection. The empirical formula (based on 2 atoms) is W1.006Cr0.02C0.992, and the simplified formula is WC. Qusongite has a hexagonal structure and belongs to space group P6m2, with a = 2.902(1) Å, c = 2.831(1) Å, c:a = 0.9775, V = 20.05 (1) Å3, Z = 1.
Received: 2008-5-5
Accepted: 2008-10-4
Published Online: 2015-4-1
Published in Print: 2009-2-1
© 2015 by Walter de Gruyter Berlin/Boston
You are currently not able to access this content.
You are currently not able to access this content.
Articles in the same Issue
- Determination of high-pressure phase equilibria of Fe2O3 using the Kawai-type apparatus equipped with sintered diamond anvils
- Suhailite, a new ammonium trioctahedral mica
- First record of K-cymrite in North Qaidam UHP eclogite, Western China
- Stability of uranium (VI) peroxide hydrates under ionizing radiation
- Heat capacities and thermodynamic functions of TiO2 anatase and rutile: Analysis of phase stability
- The behavior of Co and Ni in olivine in planetary basalts: An experimental investigation
- Partitioning of Ni between olivine and an iron-rich basalt: Experiments, partition models, and planetary implications
- The application of Lorentz transmission electron microscopy to the study of lamellar magnetism in hematite-ilmenite
- A Monte Carlo study of short- and long-range order of tetrahedral cations in sapphirine and khmaralite
- High-pressure ammonium-bearing silicates: Implications for nitrogen and hydrogen storage in the Earth’s mantle
- Formation of aragonite mesocrystals and implication for biomineralization
- U-Pb age, trace-element, and Hf-isotope compositions of zircon in a quartz vein from eclogite in the western Dabie Mountains: Constraints on fluid flow during early exhumation of ultrahigh-pressure rocks
- Interaction of phosphate-bearing solutions with gypsum: Epitaxy and induced twinning of brushite (CaHPO4·2H2O) on the gypsum cleavage surface
- Fukalite: An example of an OD structure with two-dimensional disorder
- Chemical control of 3T stacking order in a Li-poor biotite mica
- Site preference of U and Th in Cl, F, and Sr apatites
- High-pressure structural behavior of ingersonite, Ca3Mn2+Sb5+4O14: An in-situ single-crystal X-ray study
- Crystal chemistry of Fe32+Cr2Si3O12–Fe32+Fe23+Si3O12 garnet solid solutions and related spinels
- A method to synthesize large fluid inclusions in quartz at controlled times and under unfavorable growth conditions
- The stability of methane hydrate intercalates of montmorillonite and nontronite: Implications for carbon storage in ocean-floor environments
- Structure and carbonate orientation of vaterite (CaCO3)
- Qusongite (WC): A new mineral
- Nanoscale “liquid” inclusions of As-Fe-S in arsenian pyrite
- Water speciation in hydrous silicate and aluminosilicate glasses: Direct evidence from 29Si-1H and 27Al-1H double-resonance NMR
- Acid production by FeSO4·nH2O dissolution and implications for terrestrial and martian aquatic systems
Articles in the same Issue
- Determination of high-pressure phase equilibria of Fe2O3 using the Kawai-type apparatus equipped with sintered diamond anvils
- Suhailite, a new ammonium trioctahedral mica
- First record of K-cymrite in North Qaidam UHP eclogite, Western China
- Stability of uranium (VI) peroxide hydrates under ionizing radiation
- Heat capacities and thermodynamic functions of TiO2 anatase and rutile: Analysis of phase stability
- The behavior of Co and Ni in olivine in planetary basalts: An experimental investigation
- Partitioning of Ni between olivine and an iron-rich basalt: Experiments, partition models, and planetary implications
- The application of Lorentz transmission electron microscopy to the study of lamellar magnetism in hematite-ilmenite
- A Monte Carlo study of short- and long-range order of tetrahedral cations in sapphirine and khmaralite
- High-pressure ammonium-bearing silicates: Implications for nitrogen and hydrogen storage in the Earth’s mantle
- Formation of aragonite mesocrystals and implication for biomineralization
- U-Pb age, trace-element, and Hf-isotope compositions of zircon in a quartz vein from eclogite in the western Dabie Mountains: Constraints on fluid flow during early exhumation of ultrahigh-pressure rocks
- Interaction of phosphate-bearing solutions with gypsum: Epitaxy and induced twinning of brushite (CaHPO4·2H2O) on the gypsum cleavage surface
- Fukalite: An example of an OD structure with two-dimensional disorder
- Chemical control of 3T stacking order in a Li-poor biotite mica
- Site preference of U and Th in Cl, F, and Sr apatites
- High-pressure structural behavior of ingersonite, Ca3Mn2+Sb5+4O14: An in-situ single-crystal X-ray study
- Crystal chemistry of Fe32+Cr2Si3O12–Fe32+Fe23+Si3O12 garnet solid solutions and related spinels
- A method to synthesize large fluid inclusions in quartz at controlled times and under unfavorable growth conditions
- The stability of methane hydrate intercalates of montmorillonite and nontronite: Implications for carbon storage in ocean-floor environments
- Structure and carbonate orientation of vaterite (CaCO3)
- Qusongite (WC): A new mineral
- Nanoscale “liquid” inclusions of As-Fe-S in arsenian pyrite
- Water speciation in hydrous silicate and aluminosilicate glasses: Direct evidence from 29Si-1H and 27Al-1H double-resonance NMR
- Acid production by FeSO4·nH2O dissolution and implications for terrestrial and martian aquatic systems
