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Weishanite Mineral Data
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General Weishanite Information
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 Chemical Formula: |
(Au,Ag)3Hg2 |
| Composition: |
Molecular Weight = 925.26 gm |
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Silver 8.74 % Ag |
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Mercury 43.36 % Hg |
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Gold 47.90 % Au |
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______ |
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100.00 % |
| Empirical Formula: |
Au2.25Ag0.75Hg2 |
| Environment: |
In the silicified zone of the silver-rich part of an Au-Ag deposit in biotite granulte. |
| IMA Status: |
Approved IMA 1984 |
| Locality: |
Weishan, Poshan mining district,Tongbai County, Henan Province, China. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Weishanite + Pronunciation  |
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Weishanite Crystallography
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| Axial Ratios: |
a:c = 1:1.64626 |
| Cell Dimensions: |
a = 2.9265, c = 4.8178, Z = 0.25; V = 35.73 Den(Calc)= 10.75 |
| Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
| X Ray Diffraction: |
By Intensity(I/Io): 2.243(1), 0.9396(0.9), 1.3593(0.8), |
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Physical Properties of Weishanite
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| Cleavage: |
None |
| Color: |
Light yellow. |
| Diaphaneity: |
Opaque |
| Fracture: |
Malleable - Deforms rather than breaking apart with a hammer. |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
2.5 - Finger Nail |
| Luster: |
Metallic |
| Streak: |
light yellow |
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Optical Properties of Weishanite
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| RL Anisotrophism: |
Weak. |
| RL Pleochroism: |
Weak. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Weishanite in Air
| λ |
R |
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∑ R(λ) |
| 480 nm |
63.75 |
 |
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| 534 nm |
76.30 |
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| 589 nm |
81.03 |
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| 656 nm |
68.60 |
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Calculated Relative Intensity Colors of Weishanite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
| R |
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Calculated Properties of Weishanite
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| Electron Density: |
Bulk Density (Electron Density)=8.67 gm/cc
note: Specific Gravity of Weishanite =10.8 gm/cc.
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| Fermion Index: |
Fermion Index = 0.13
Boson Index = 0.87 |
| Photoelectric: |
PEWeishanite =1,594.03 barns/electron
U=PEWeishanite x rElectron Density=13816.02 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Weishanite is Not Radioactive |
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Weishanite Classification
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| Dana Class: |
01.01.08.06 (01)Native Elements |
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(01.01)with metallic elements other than the platinum group |
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(01.01.08)Silver Amalgam Alloys |
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01.01.08.00 Amalgam* Ag2Hg3 Unk Cubic |
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01.01.08.01 Moschellandsbergite Ag2Hg3 I m3m 4/m 3 2/m |
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01.01.08.02 Schachnerite Ag1.1Hg0.9 P 63/mmc 6/m 2/m 2/m |
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01.01.08.03 Paraschachnerite Ag3Hg2 C mcm 2/m 2/m 2/m |
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01.01.08.04 Luanheite Ag3Hg P 63/mmc 6/m 2/m 2/m |
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01.01.08.05 Eugenite Ag9Hg2 I 43m 4 3m |
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01.01.08.06 Weishanite (Au,Ag)3Hg2 P 63/mmc 6/m 2/m 2/m |
| Strunz Class: |
01.AD.20a 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.A - Metals and Intermetallic Alloys |
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01.AD -Mercury-amalgam family |
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01.AD.20a Weishanite (Au,Ag)3Hg2 P 63/mmc 6/m 2/m 2/m |
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Other Weishanite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.73,p196,1988) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Weishanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Print or Cut-and-Paste your Weishanite Specimen Label here :
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Weishanite
(Au,Ag)3Hg2
Dana No: 01.01.08.06 Strunz No: 01.AD.20a
Locality:
Notes:
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