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Weishanite

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About WeishaniteHide

Formula:
(Au,Ag,Hg)
Originally assumed to be (Au,Ag)3Hg2.
Colour:
Light yellow
Lustre:
Metallic
Hardness:
Specific Gravity:
18.17 (Calculated)
Crystal System:
Hexagonal
Name:
For the type locality in the Weishancheng ore field, Tongbai Co., Henan Province, China.

Classification of WeishaniteHide

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 WeishaniteHide

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

Optical Data of WeishaniteHide

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 WeishaniteHide

Formula:
(Au,Ag,Hg)

Originally assumed to be (Au,Ag)3Hg2.
IMA Formula:
(Au,Ag)1.2Hg0.8

Crystallography of WeishaniteHide

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Cell Parameters:
a = 2.9348(8) Å, c = 4.8215(18) Å
Ratio:
a:c = 1 : 1.643
Unit Cell V:
35.96 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Grains to 30 microns. Tiny prismatic crystals.
Comment:
Bindi et al. (2018). Type material has a = 2.9265, c = 4.8178 Å.

Type Occurrence of WeishaniteHide

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.

Synonyms of WeishaniteHide

Other Language Names for WeishaniteHide

German:Weishanit
Simplified Chinese:围山矿
Spanish:Weishanita

Related Minerals - Nickel-Strunz GroupingHide

1.AD.AurihydrargyrumiteAu6Hg5Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
1.AD.05MercuryHgTrig. 3m (3 2/m) : R3m
1.AD.10BelendorffiteCu7Hg6Trig.
1.AD.10KolymiteCu7Hg6Iso.
1.AD.15cEugeniteAg11Hg2Iso.
1.AD.15bLuanheiteAg3HgHex.
1.AD.15dMoschellandsbergiteAg2Hg3Iso. m3m (4/m 3 2/m)
1.AD.15aParaschachneriteAg3Hg2Orth.
1.AD.15aSchachneriteAg1.1Hg0.9Hex.
1.AD.20bGoldamalgam (of Chen et al.)(Au,Ag)HgIso. m3m (4/m 3 2/m) : Im3m
1.AD.25PotaritePdHgTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
1.AD.30LeadamalgamPb0.7Hg0.3Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm

Related Minerals - Dana Grouping (8th Ed.)Hide

1.1.8.1MoschellandsbergiteAg2Hg3Iso. m3m (4/m 3 2/m)
1.1.8.2SchachneriteAg1.1Hg0.9Hex.
1.1.8.3ParaschachneriteAg3Hg2Orth.
1.1.8.4LuanheiteAg3HgHex.
1.1.8.5EugeniteAg11Hg2Iso.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

1.1CopperCuIso. m3m (4/m 3 2/m) : Fm3m
1.2SilverAgIso. m3m (4/m 3 2/m) : Fm3m
1.5GoldAuIso. m3m (4/m 3 2/m) : Fm3m
1.6AuricuprideCu3AuOrth.
1.7Tetra-auricuprideAuCuTet.
1.8ZincZnHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.9CadmiumCdHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.10DanbaiteCuZn2Iso.
1.11ZhanghengiteCuZnIso.
1.12MercuryHgTrig. 3m (3 2/m) : R3m
1.13KolymiteCu7Hg6Iso.
1.14MoschellandsbergiteAg2Hg3Iso. m3m (4/m 3 2/m)
1.15EugeniteAg11Hg2Iso.
1.16SchachneriteAg1.1Hg0.9Hex.
1.17ParaschachneriteAg3Hg2Orth.
1.18LuanheiteAg3HgHex.
1.20IndiumInTet.
1.21AluminiumAlIso. m3m (4/m 3 2/m) : Fm3m
1.22Khatyrkite(Cu,Zn)Al2Tet.
1.23Cupalite(Cu,Zn)AlOrth.
1.24DiamondCIso. m3m (4/m 3 2/m) : Fd3m
1.25GraphiteCHex. 6mm : P63mc
1.26ChaoiteCHex. 6/mmm (6/m 2/m 2/m) : P6/mmm
1.27LonsdaleiteCHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.28SiliconSi
1.29TinSnTet. 4/mmm (4/m 2/m 2/m) : I41/amd
1.30LeadPbIso. m3m (4/m 3 2/m) : Fm3m
1.31AnyuiiteAuPb2Tet. 4/mmm (4/m 2/m 2/m) : I4/mcm
1.31NovodnepriteAuPb3Tet. 4 2m : I4 2m
1.32LeadamalgamPb0.7Hg0.3Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
1.33ArsenicAsTrig. 3m (3 2/m) : R3m
1.34ArsenolampriteAsOrth. mmm (2/m 2/m 2/m)
1.35PaxiteCuAs2Mon.
1.36KoutekiteCu5As2Hex.
1.37DomeykiteCu3AsIso. 4 3m : I4 3d
1.38Algodonite(Cu1-xAsx)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.39NovákiteCu20AgAs10Mon.
1.40KutinaiteAg6Cu14As7Iso.
1.41AntimonySbTrig. 3m (3 2/m) : R3m
1.42StibarsenAsSbTrig. 3m (3 2/m) : R3m
1.43ParadocrasiteSb3AsMon. 2 : B2
1.44HorsforditeCu, Sb
1.45CuprostibiteCu2(Sb,Tl)Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
1.46Allargentum(Ag1-xSbx)Hex.
1.47AurostibiteAuSb2Iso. m3 (2/m 3) : Pa3
1.48DyscrasiteAg3SbOrth. mm2 : Pmm2
1.49BismuthBiTrig. 3m (3 2/m) : R3m
1.50MaldoniteAu2BiIso. m3m (4/m 3 2/m) : Fd3m
1.51SulphurS8Orth. mmm (2/m 2/m 2/m) : Fddd
1.52RosickýiteSMon. 2/m : P2/b
1.53SeleniumSeTrig. 3 2 : P31 2 1
1.54TelluriumTeTrig. 3 2 : P31 2 1
1.55ChromiumCrIso. m3m (4/m 3 2/m) : Im3m
1.56RheniumReHex.
1.57IronFeIso. m3m (4/m 3 2/m) : Im3m
1.58ChromferideFe3Cr1-x (x=0.6)Iso. m3m (4/m 3 2/m) : Pm3m
1.59FerchromideCr3Fe1-xIso. m3m (4/m 3 2/m) : Pm3m
1.60WairauiteCoFe
1.61NickelNiIso. m3m (4/m 3 2/m) : Fm3m
1.62Kamacite(Fe,Ni)Iso.
1.63Taenite(Fe,Ni)Iso. m3m (4/m 3 2/m) : Fm3m
1.64TetrataeniteFeNiTet.
1.65AwaruiteNi3FeIso. m3m (4/m 3 2/m) : Fm3m
1.66Palladium(Pd,Pt)
1.67PotaritePdHgTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
1.68PaolovitePd2SnOrth.
1.69Stannopalladinite(Pd,Cu)3Sn2Hex.
1.70CabriitePd2CuSnOrth. mmm (2/m 2/m 2/m) : Pmmm
1.71Taimyrite(Pd,Cu,Pt)3SnOrth.
1.72Atokite(Pd,Pt)3SnIso. m3m (4/m 3 2/m) : Fm3m
1.73Rustenburgite(Pt,Pd)3Sn
1.74ZvyagintsevitePd3PbIso.
1.75PlumbopalladinitePd3Pb2Hex.
1.76Osmium(Os,Ir,Ru)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
1.77Iridium(Ir,Os,Ru)Iso.
1.82PlatinumPtIso. m3m (4/m 3 2/m) : Fm3m
1.83HongshiitePtCuTrig.
1.84NiggliitePtSnHex.
1.85IsoferroplatinumPt3FeIso.
1.86TetraferroplatinumPtFeTet.
1.87TulameenitePt2CuFeTet.
1.88FerronickelplatinumPt2FeNiTet.
1.89Rhodium(Rh,Pt)Iso.

Other InformationHide

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 WeishaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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).
Bindi, L., Keutsch, F.N., Lepore, G.O. (2018): Structural and chemical study of weishanite, (Au,Ag,Hg), from the Keystone mine, Colorado, USA. Mineralogical Magazine 82, 1141-1145.

Internet Links for WeishaniteHide

Localities for WeishaniteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Brazil
 
  • Minas Gerais
    • Mariana (Marianna de Itacolumy)
extraLapis #2 (1992), 52
China (TL)
 
  • Henan
    • Nanyang
      • Tongbai County
        • Weishancheng ore field
Yuheng Li, Shan Ouyang, and Peixue Tian (1984): Acta Mineralogica Sinica 4(2), 102-105
USA
 
  • Colorado
    • Boulder Co.
      • Magnolia Mining District
EDS analysed by J.Desor 2016_11_28; Bindi, L., Keutsch, F.N., Lepore, G.O. (2018): Structural and chemical study of weishanite, (Au,Ag,Hg), from the Keystone mine, Colorado, USA. Mineralogical Magazine 82, 1141-1145.
 
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