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Chenguodaite

A valid IMA mineral species
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02307520017272471078357.jpg
Chenguodaite

Harvard Mine, Jamestown Mine, Jamestown, Jamestown District, Tuolumne County, California, USA
02307520017272471078357.jpg
Chenguodaite

Harvard Mine, Jamestown Mine, Jamestown, Jamestown District, Tuolumne County, California, USA
02307520017272471078357.jpg
Chenguodaite

Harvard Mine, Jamestown Mine, Jamestown, Jamestown District, Tuolumne County, California, USA
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About ChenguodaiteHide

07686450017272471078698.jpg
Chen Guoda
Formula:
Ag9Fe3+Te2S4
Colour:
dark gray
Lustre:
Metallic
Hardness:
2 - 3
Specific Gravity:
6.85 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Chen Guoda (é™ˆå›―čūū) (22 January 1912, Xinhui County, Guangdong Province, China - 7 April 2004, Changsha, Hunan province, China), geologist, professor, and founder of Diwa-Geodepression theory of tectonics.
Dimorph of:
Xuwenyuanite
Compare 'UM1989-18-S:AgFeTe'.


Unique IdentifiersHide

Mindat ID:
28953
Long-form identifier:
mindat:1:1:28953:3

Similar NamesHide

ChengdeiteA valid IMA mineral speciesIr3Fe

IMA Classification of ChenguodaiteHide

Classification of ChenguodaiteHide

Strunz-mindat (2026):
2.BA.60

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
A : With Cu, Ag, Au
Dana 8th ed.:
2.16.28.

2 : SULFIDES
16 : Miscellaneous

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
CguIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of ChenguodaiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Dark gray
Hardness:
2 - 3 on Mohs scale
Parting:
uneven
Density:
6.85 g/cm3 (Calculated)

Optical Data of ChenguodaiteHide

Anisotropism:
'indistinguishable anistropism'
Bireflectance:
none
Reflectivity:
WavelengthR1 (%)
400nm22.1%
400nm28.0%
470nm27.8%
500nm27.0%
520nm26.2%
546nm25.8%
560nm25.5%
589nm25.3%
620nm26.4%
650nm25.6%
680nm25.7%
700nm25.8%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 28.0%.
Colour in reflected light:
Light gray
Internal Reflections:
none

Chemistry of ChenguodaiteHide

Mindat Formula:
Ag9Fe3+Te2S4
Element Weights:
Element% weight
Ag68.846 %
Te18.098 %
S9.096 %
Fe3.960 %

Calculated from ideal end-member formula.
Ag
Te
S
Fe
Elements listed:
Ag, Fe, S, Te - search for minerals with similar chemistry

Crystallography of ChenguodaiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 12.769(2) Å, b = 14.814(2) Å, c = 16.233(1) Å
Ratio:
a:b:c = 0.862 : 1 : 1.096
Unit Cell V:
3,070.63 ÅÂģ (Calculated from Unit Cell)
Z:
9
Comment:
point Group n.d.; Space Group n.d.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.742 Å(69)
6.416 Å(39)
5.951 Å(33)
3.265 Å(100)
2.981 Å(24)
2.649 Å(22)
2.25 Å(24)
2.188 Å(71)
2.142 Å(22)
2.123 Å(31)
2.044 Å(23)
1.949 Å(33)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of ChenguodaiteHide

Type Locality:
ⓘ Funan Au deposit (Bunan), Zhaoyuan City, Yantai, Shandong, China
General Appearance of Type Material:
xenomorphic rounded or irregular shapes with the grain size 5―70 ξm
Place of Conservation of Type Material:
Chinese Geological Museum, the catalogue number is M10487
Geological Setting of Type Material:
hydrothermal deposit
Associated Minerals at Type Locality:
AcanthiteChalcopyriteGalenaHessiteNative Silver
Reference:
Gu, X., Watanabe, M., Xie, X., Peng, S., Nakamuta, Y., Ohkawa, M., Hoshino, K., Ohsumi, K., Shibata, Y. (2008) Chenguodaite (Ag^9FeTe^2S^4): a new tellurosulfide mineral from the gold district of East Shandong Peninsula, China. Chinese Science Bulletin: 53(22): 3567-3573.

Synonyms of ChenguodaiteHide

Other Language Names for ChenguodaiteHide

Related Minerals - Strunz-mindat GroupingHide

2.BA.MakotoiteAg12(Cu3Au)S8Trig. 3m(32/m) : R3c
2.BA.AlburniteAg8GeTe2S4Iso.
2.BA.DzierÅžanowskiteCaCu2S2Trig. 3m(32/m) : P3m1
2.BA.XuwenyuaniteAg9Fe3+Te2S4Iso. 43m : F43m
2.BA.'Orileyite'(Fe,Cu)2As
2.BA.JuxingiteBi6Cu+138Cu2+2Fe3+30S125Iso. 43m : F43m
2.BA.05DjurleiteCu31S16Mon. 2/m
2.BA.05GeeriteCu8S5Trig. 3
2.BA.05RoxbyiteCu58S32Tric. 1 : P1
2.BA.05ChalcociteCu2SMon. 2/m : P21/b
2.BA.10DigeniteCu9S5Trig. 3m(32/m) : R3m
2.BA.10AniliteCu7S4Orth. mmm(2/m2/m2/m) : Pnma
2.BA.15BorniteCu5FeS4Orth. mmm(2/m2/m2/m) : Pbca
2.BA.20BellidoiteCu2SeTet. 4/m : P42/n
2.BA.20BerzelianiteCu2-xSe (x ≈ 0.12)Iso. m3m(4/m32/m) : Fm3m
2.BA.25AthabascaiteCu5Se4Orth.
2.BA.25UmangiteCu3Se2Tet. 42m : P421m
2.BA.30RickarditeCu7Te5Orth. mmm(2/m2/m2/m) : Pmmn
2.BA.30WeissiteCu2-xTeHex. 6/mmm(6/m2/m2/m) : P6/mmm
2.BA.35AcanthiteAg2SMon. 2/m : P21/m
2.BA.35SpryiteAg8(As3+0.5As5+0.5)S6Orth. mm2 : Pna21
2.BA.40d'UM2003-13-S:AgAuCu'Ag6AuCu2S5
2.BA.40MckinstryiteAg5-xCu3+xS4Orth. mmm(2/m2/m2/m) : Pnma
2.BA.40StromeyeriteAgCuSOrth. mmm(2/m2/m2/m)
2.BA.42HoneaiteAu3TlTe2 Orth. mmm(2/m2/m2/m) : Pbcm
2.BA.45JalpaiteAg3CuS2Tet. 4/mmm(4/m2/m2/m) : I41/amd
2.BA.45SelenojalpaiteAg3CuSe2Tet. 4/mmm(4/m2/m2/m) : I41/amd
2.BA.45KuriliteAg8Te3SeTrig. 3 : R3
2.BA.47Spiridonovite(Cu1-xAgx)2TeTrig. 3m(32/m) : P3c1
2.BA.50WuyanzhiiteCu2STet. 422 : P43212
2.BA.50EucairiteAgCuSeOrth.
2.BA.52'Argentite'Ag2SIso.
2.BA.55NaumanniteAg2SeOrth. 222 : P212121
2.BA.55AguilariteAg4SeSMon. 2/m
2.BA.60HessiteAg2TeMon. 2/m : P21/b
2.BA.60CervelleiteAg4TeSMon. 2/m
2.BA.65Henryite(Cu,Ag)3+xTe2 , with x ~ 0.40Iso. m3m(4/m32/m) : Fd3c
2.BA.65StÞtziteAg5-xTe3, x = 0.24-0.36Hex. 6 : P6
2.BA.70ArgyroditeAg8GeS6Orth. mm2 : Pna21
2.BA.70Putzite(Cu4.7Ag3.3)GeS6Iso. 43m : F43m
2.BA.70CanfielditeAg8SnS6Orth. mm2 : Pna21
2.BA.75FischesseriteAg3AuSe2Iso. 432 : I4132
2.BA.75UytenbogaardtiteAg3AuS2Trig. 3m(32/m) : R3c
2.BA.75Penzhinite(Ag,Cu)4Au(S,Se)4Hex. 622 : P6322
2.BA.75PetrovskaiteAuAgSMon.
2.BA.75PetziteAg3AuTe2Iso. 432 : I4132
2.BA.80Bezsmertnovite(Au,Ag)4Cu(Te,Pb)Orth.
2.BA.80BilibinskitePbCu2Au3Te2Iso.
2.BA.80Bogdanovite(Au,Te,Pb)3(Cu,Fe)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.

Internet Links for ChenguodaiteHide

References for ChenguodaiteHide

Localities for ChenguodaiteHide

Showing 4 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
China (TL)
 
  • Shandong
    • Yantai
      • Zhaoyuan City
Gu et al. (2008)
Morocco
 
  • Souss-Massa Region
    • Taroudant Province
      • Taliouine Cercle
        • Ouzioua CaÃŊdat
Ferraq et al. (2024)
Slovakia
 
  • BanskÃĄ Bystrica Region
    • Å―arnovica District
      • HodruÅĄa-HÃĄmre
        • HodruÅĄa-HÃĄmre mines
Berkh et al. (2014)
USA
 
  • California
    • Tuolumne County
      • Jamestown District
        • Jamestown
          • Jamestown Mine (Jamestown group)
FÃĪrber (n.d.)
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