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Yarlongite Mineral Data
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General Yarlongite Information
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 Chemical Formula: |
(Cr4Fe4Ni)C4 |
| Composition: |
Molecular Weight = 538.11 gm |
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Chromium 38.65 % Cr |
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Iron 41.51 % Fe |
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Nickel 10.91 % Ni |
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Carbon 8.93 % C |
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______ |
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100.00 % |
| Empirical Formula: |
Cr4Fe0+4NiC4 |
| Environment: |
Hand picked from a large heavy mineral processed sample of chromitite ore. |
| IMA Status: |
Approved IMA 2007 (Dana # Added) |
| Locality: |
Luobusa mine, Qusong County, Tibet, China Link to MinDat.org Location Data. |
| Name Origin: |
Commission on New Minerals, Nomenclature and Classification (CNMNC) |
| Synonym: |
IMA2007-035 |
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Yarlongite Crystallography
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| Axial Ratios: |
a:c = 1:0.23865 |
| Cell Dimensions: |
a = 13.839, c = 4.496, Z = 11; V = 745.70 Den(Calc)= 13.18 |
| Crystal System: |
Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 63mc |
| X Ray Diffraction: |
By Intensity(I/Io): 6.92(1), 2.023(0.98), 3.596(0.55),1.825(0.47), 1.798(0.45), 2.493(0.36), 4.53(0.35), 1.998(0.32), |
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Physical Properties of Yarlongite
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| Cleavage: |
{001} Perfect |
| Color: |
Steel gray. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
| Habit: |
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. |
| Hardness: |
5.5-6 - Knife Blade-Orthoclase |
| Luster: |
Metallic |
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Calculated Properties of Yarlongite
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| Electron Density: |
Bulk Density (Electron Density)=6.66 gm/cc
note: Specific Gravity of Yarlongite =7.11 gm/cc.
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| Fermion Index: |
Fermion Index = 0.04
Boson Index = 0.96 |
| Photoelectric: |
PEYarlongite = 26.19 barns/electron
U=PEYarlongite x rElectron Density= 174.40 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Yarlongite is Not Radioactive |
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Yarlongite Classification
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| Dana Class: |
01.01.26.01 (01)Native Elements |
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(01.01)with metallic elements other than the platinum group |
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(01.01.26)Dana Group |
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01.01.26.01 Yarlongite! (Cr4Fe4Ni)C4 P 63mc 6mm |
| Strunz Class: |
01.BA.30 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.B - Metallic Carbides, Silicides, Nitrides and Phosphides |
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01.BA -Carbides |
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01.BA.30 Yarlongite! (Cr4Fe4Ni)C4 P 63mc 6mm |
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Other Yarlongite Information
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| References: |
PHYS. PROP.(ACTA GEOLOGICA SINICA) |
| See Also: |
Links to other databases for Yarlongite :
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 Yarlongite Specimen Label here :
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Yarlongite
(Cr4Fe4Ni)C4
Dana No: 01.01.26.01 Strunz No: 01.BA.30
Locality:
Notes:
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