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Weishanite

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Formula:
(Au,Ag)3Hg2
System:
Hexagonal
Colour:
Light yellow
Lustre:
Metallic
Hardness:
Name:
For the type locality in the Weishancheng ore field, Tongbai Co., Henan Province, China.

Classification of Weishanite

Approved
Approval Year:
1982
1.AD.20a

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
D : Mercury-amalgam family
Dana 7th ed.:
1.1.12.3
1.1.8.6

1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
1.19

1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)

Physical Properties of Weishanite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Light yellow
Streak:
Light yellow
Hardness (Mohs):
Hardness (Vickers):
VHN100=50.5
Tenacity:
Malleable
Density:
18.17 g/cm3 (Calculated)

Optical Data of Weishanite

Type:
Anisotropic
Anisotropism:
Weak
Reflectivity:
480nmR=63.75%
530nmR=75.5%
590nmR=81.03%
660nmR=68.6%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 81.03%.
Pleochroism:
Weak

Chemical Properties of Weishanite

Formula:
(Au,Ag)3Hg2
IMA Formula:
(Au,Ag)1.2Hg0.8
Elements listed in formula:

Crystallography of Weishanite

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Cell Parameters:
a = 2.9265 Å, c = 4.8178 Å
Ratio:
a:c = 1 : 1.646
Unit Cell Volume:
V 35.73 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Grains to 30 microns.

Type Occurrence of Weishanite

Place of Conservation of Type Material:
National Geological Museum, Beijing
Geological Setting of Type Material:
Silicified zone of a gold-silver deposit in biotite granulite.

Relationship of Weishanite to other Species

1.AD.05MercuryHg
1.AD.10BelendorffiteCu7Hg6
1.AD.10KolymiteCu7Hg6
1.AD.15cEugeniteAg11Hg2
1.AD.15bLuanheiteAg3Hg
1.AD.15dMoschellandsbergiteAg2Hg3
1.AD.15aParaschachneriteAg3Hg2
1.AD.15aSchachneriteAg1.1Hg0.9
1.AD.20bGoldamalgam (of Chen et al.)(Au,Ag)Hg
1.AD.25PotaritePdHg
1.AD.30LeadamalgamPb0.7Hg0.3
1.1CopperCu
1.2SilverAg
1.5GoldAu
1.6AuricuprideCu3Au
1.7Tetra-auricuprideAuCu
1.8ZincZn
1.9CadmiumCd
1.10DanbaiteCuZn2
1.11ZhanghengiteCuZn
1.12MercuryHg
1.13KolymiteCu7Hg6
1.14MoschellandsbergiteAg2Hg3
1.15EugeniteAg11Hg2
1.16SchachneriteAg1.1Hg0.9
1.17ParaschachneriteAg3Hg2
1.18LuanheiteAg3Hg
1.20IndiumIn
1.21AluminiumAl
1.22Khatyrkite(Cu,Zn)Al2
1.23Cupalite(Cu,Zn)Al
1.24DiamondC
1.25GraphiteC
1.26ChaoiteC
1.27LonsdaleiteC
1.28SiliconSi
1.29TinSn
1.30LeadPb
1.31AnyuiiteAuPb2
1.31NovodnepriteAuPb3
1.32LeadamalgamPb0.7Hg0.3
1.33ArsenicAs
1.34ArsenolampriteAs
1.35PaxiteCuAs2
1.36KoutekiteCu5As2
1.37DomeykiteCu3As
1.38Algodonite(Cu1-xAsx)
1.39NovákiteCu20AgAs10
1.40KutinaiteAg6Cu14As7
1.41AntimonySb
1.42StibarsenAsSb
1.43ParadocrasiteSb3As
1.44HorsforditeCu, Sb
1.45CuprostibiteCu2(Sb,Tl)
1.46Allargentum(Ag1-xSbx)
1.47AurostibiteAuSb2
1.48DyscrasiteAg3Sb
1.49BismuthBi
1.50MaldoniteAu2Bi
1.51SulphurS8
1.52RosickýiteS
1.53SeleniumSe
1.54TelluriumTe
1.55ChromiumCr
1.56RheniumRe
1.57IronFe
1.58ChromferideFe3Cr1-x (x=0.6)
1.59FerchromideCr3Fe1-x
1.60WairauiteCoFe
1.61NickelNi
1.62Kamacite(Fe,Ni)
1.63Taenite(Fe,Ni)
1.64TetrataeniteFeNi
1.65AwaruiteNi3Fe
1.66Palladium(Pd,Pt)
1.67PotaritePdHg
1.68PaolovitePd2Sn
1.69Stannopalladinite(Pd,Cu)3Sn2
1.70CabriitePd2CuSn
1.71Taimyrite(Pd,Cu,Pt)3Sn
1.72Atokite(Pd,Pt)3Sn
1.73Rustenburgite(Pt,Pd)3Sn
1.74Zvyagintsevite(Pd,Pt,Au)3(Pb,Sn)
1.75PlumbopalladinitePd3Pb2
1.76Osmium(Os,Ir,Ru)
1.77Iridium(Ir,Os,Ru)
1.82PlatinumPt
1.83HongshiitePtCu
1.84NiggliitePtSn
1.85IsoferroplatinumPt3Fe
1.86TetraferroplatinumPtFe
1.87TulameenitePt2CuFe
1.88FerronickelplatinumPt2FeNi
1.89Rhodium(Rh,Pt)

Other Names for Weishanite

Name in Other Languages:
German:Weishanit
Simplified Chinese:围山矿
Spanish:Weishanita

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.

References for Weishanite

Reference List:
Li Yuheng, Ouyang Shan, and Tian Peixue (1984): Weishanite - A new gold-bearing mineral. Acta Mineralogica Sinica 4(2), 102-105 (in Chinese with English abstract). - American Mineralogist (1988), 73, 196 (abstract).

American Mineralogist (1989), 74, 504.

Shaofeng Huang (2011): Mineralogical characteristics of gold-mercury minerals in the Davao gold placer of Mindanao islands, Phillippines, and its prospecting significance. Geology and Exploration 47(5), 935-942 (in Chinese with English abstract).

Internet Links for Weishanite

mindat.org URL:
https://www.mindat.org/min-4261.html
Please feel free to link to this page.

Localities for Weishanite

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Brazil
 
  • Minas Gerais
    • Iron Quadrangle
      • Mariana (Marianna de Itacolumy)
extraLapis #2 (1992), 52
China (TL)
 
  • Henan Province
    • Nanyang Prefecture
      • Tongbai Co.
        • Weishancheng ore field
Yuheng Li, Shan Ouyang, and Peixue Tian (1984): Acta Mineralogica Sinica 4(2), 102-105
USA
 
  • Colorado
    • Boulder Co.
      • Magnolia District
EDS analysed by J.Desor 2016_11_28
Mineral and/or Locality  
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