Mineralogy Database

Yuanjiangite Mineral Data

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General Yuanjiangite Information

Help on Chemical  Formula: Chemical Formula: AuSn
Help on Composition: Composition: Molecular Weight = 315.68 gm
   Tin   37.60 %  Sn
   Gold  62.40 %  Au
        100.00 % 
Help on Empirical Formula: Empirical Formula: AuSn
Help on Environment: Environment: Placer deposit.
Help on IMA Status: IMA Status: Approved IMA 1994
Help on Locality: Locality: In sandy gravel in the middle course of the Yuanjiang River, near the town of Yuanlin, Hunan Province, Peoples Republic of China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Yuanjiangite + Pronunciation Say YUANJIANGITE
Help on Synonym: Synonym: ICSD 56262
  PDF 8-463

Yuanjiangite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.27664
Help on Cell Dimensions: Cell Dimensions: a = 4.316, c = 5.51, Z = 2; V = 88.89 Den(Calc)= 11.79
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.218(1), 2.159(0.57), 3.087(0.38),

Physical Properties of Yuanjiangite

Help on Cleavage: Cleavage: None
Help on Color: Color: Silver white.
Help on Density: Density: 11.7 - 11.9, Average = 11.8
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Metallic
Help on Streak: Streak: black

Optical Properties of Yuanjiangite

Help on RL Anisotrophism: RL Anisotrophism: Clear, light yellow with brown tint.
Help on RL Bireflectance: RL Bireflectance: Faint.
Help on RL Color: RL Color: White with a light yellow tint.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Yuanjiangite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 480 nm   67.10   66.70 
 540 nm   76.10   74.30 
 580 nm   79.90   77.40 
 660 nm   83.10   79.60 
Calculated Relative Intensity Colors of Yuanjiangite in Air
   0%   20%   40%   60%   80% 100% 120% 140%

Calculated Properties of Yuanjiangite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=9.64 gm/cc
note: Specific Gravity of Yuanjiangite =11.8 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEYuanjiangite =1,165.22 barns/electron
U=PEYuanjiangite x rElectron Density=11227.92 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Yuanjiangite is Not Radioactive

Yuanjiangite Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.01)with metallic elements other than the platinum group
  (01.01.02)Auricupride Group Auricupride Cu3Au P m3m 4/m 3 2/m Tetra-auricupride AuCu P 4/mmm 4/m 2/m 2/m Yuanjiangite AuSn P 63/mmc 6/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 01.AC.15 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.A - Metals and Intermetallic Alloys
  01.AC -Indium-tin family
01.AC.15 Sorosite! Cu(Sn,Sb) P 63/mmc 6/m 2/m 2/m
01.AC.15 Yuanjiangite AuSn P 63/mmc 6/m 2/m 2/m

Other Yuanjiangite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p1330,1995) OPTIC PROP.(MinRec, v 27, p 395)
Help on See Also: See Also: Links to other databases for Yuanjiangite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 01.AC.15





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