Chenguodaite
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About Chenguodaite
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 (陈国达) (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.
Classification of Chenguodaite
Approved
Approval Year:
2005
First Published:
2008
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
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
2.16.28.
2 : SULFIDES
16 : Miscellaneous
2 : SULFIDES
16 : Miscellaneous
Physical Properties of Chenguodaite
Metallic
Transparency:
Opaque
Colour:
dark gray
Hardness:
2 - 3 on Mohs scale
Parting:
uneven
Density:
6.85 g/cm3 (Calculated)
Optical Data of Chenguodaite
Type:
Isotropic
Bireflectance:
none
Internal Reflections:
none
Chemical Properties of Chenguodaite
Formula:
Ag9Fe3+Te2S4
IMA Formula:
Ag9FeTe2S4
Elements listed:
Crystallography of Chenguodaite
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 ų (Calculated from Unit Cell)
Z:
9
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
6.742 | (69) |
6.416 | (39) |
5.951 | (33) |
3.265 | (100) |
2.981 | (24) |
2.649 | (22) |
2.25 | (24) |
2.188 | (71) |
2.142 | (22) |
2.123 | (31) |
2.044 | (23) |
1.949 | (33) |
Type Occurrence of Chenguodaite
General Appearance of Type Material:
xenomorphic rounded or irregular shapes with the grain size 5―70 μm
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:
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 Chenguodaite
Related Minerals - Nickel-Strunz Grouping
2.BA. | Alburnite | Ag8GeTe2S4 | Iso. |
2.BA. | Dzierżanowskite | CaCu2S2 | Trig. 3m (3 2/m) : P3m1 |
2.BA.05 | Chalcocite | Cu2S | Mon. 2/m : P21/b |
2.BA.05 | Djurleite | Cu31S16 | Mon. 2/m |
2.BA.05 | Geerite | Cu8S5 | Trig. 3 |
2.BA.05 | Roxbyite | Cu9S5 | Tric. 1 : P1 |
2.BA.10 | Anilite | Cu7S4 | Orth. mmm (2/m 2/m 2/m) : Pnma |
2.BA.10 | Digenite | Cu9S5 | Trig. 3m (3 2/m) : R3m |
2.BA.15 | Bornite | Cu5FeS4 | Orth. mmm (2/m 2/m 2/m) : Pbca |
2.BA.20 | Bellidoite | Cu2Se | Tet. 4/m : P42/n |
2.BA.20 | Berzelianite | Cu2Se | Iso. m3m (4/m 3 2/m) : Fm3m |
2.BA.25 | Athabascaite | Cu5Se4 | Orth. |
2.BA.25 | Umangite | Cu3Se2 | Tet. |
2.BA.30 | Rickardite | Cu7Te5 | Orth. |
2.BA.30 | Weissite | Cu2-xTe | Hex. |
2.BA.35 | Acanthite | Ag2S | Mon. 2/m : P21/m |
2.BA.40 | Mckinstryite | Ag5-xCu3+xS4 | Orth. mmm (2/m 2/m 2/m) : Pnma |
2.BA.40 | Stromeyerite | AgCuS | Orth. mmm (2/m 2/m 2/m) |
2.BA.40d | UM2003-13-S:AgAuCu | Ag6AuCu2S5 | |
2.BA.45 | Jalpaite | Ag3CuS2 | Tet. |
2.BA.45 | Selenojalpaite | Ag3CuSe2 | Tet. 4/mmm (4/m 2/m 2/m) : I41/amd |
2.BA.50 | Eucairite | AgCuSe | Orth. |
2.BA.55 | Aguilarite | Ag4SeS | Mon. 2/m |
2.BA.55 | Naumannite | Ag2Se | Orth. 2 2 2 : P21 21 21 |
2.BA.60 | Cervelleite | Ag4TeS | Mon. 2/m |
2.BA.60 | Hessite | Ag2Te | Mon. 2/m : P21/b |
2.BA.65 | Henryite | (Cu,Ag)3+xTe2 , with x ~ 0.40 | Iso. m3m (4/m 3 2/m) : Fd3c |
2.BA.65 | Stützite | Ag5-xTe3, x = 0.24-0.36 | Hex. 6 : P6 |
2.BA.70 | Argyrodite | Ag8GeS6 | Orth. mm2 : Pna21 |
2.BA.70 | Canfieldite | Ag8SnS6 | Orth. mm2 |
2.BA.70 | Putzite | (Cu4.7Ag3.3)GeS6 | Iso. 4 3m : F4 3m |
2.BA.75 | Fischesserite | Ag3AuSe2 | Iso. 4 3 2 : I41 3 2 |
2.BA.75 | Penzhinite | (Ag,Cu)4Au(S,Se)4 | Hex. |
2.BA.75 | Petrovskaite | AuAg(S,Se) | Mon. |
2.BA.75 | Petzite | Ag3AuTe2 | Iso. 4 3 2 : I41 3 2 |
2.BA.75 | Uytenbogaardtite | Ag3AuS2 | Trig. 3m (3 2/m) : R3c |
2.BA.80 | Bezsmertnovite | (Au,Ag)4Cu(Te,Pb) | Orth. |
2.BA.80 | Bilibinskite | PbCu2Au3Te2 | Iso. |
2.BA.80 | Bogdanovite | (Au,Te,Pb)3(Cu,Fe) | Iso. |
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 Chenguodaite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gu X., Watanabe, M., Hoshino, K., Shibata Y. (2003) New find of silver tellurosulphides from the Funan gold deposit, East Shandong, China. European Journal of Mineralogy: 15: 147-155.
Gu, X., Watanabe, M., Xie, X., Peng, S., Nakamuta, Y., Ohkawa, M., Hoshino, K., Ohsumi, K., Shibata, Y. (2008) Chenguodaite (Ag9FeTe2S4): a new tellurosulfide mineral from the gold district of East Shandong Peninsula, China. Chinese Science Bulletin: 53(22): 3567-3573.
Internet Links for Chenguodaite
mindat.org URL:
https://www.mindat.org/min-28953.html
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External Links:
Mineral Dealers:
Localities for Chenguodaite
Locality List




All localities listed without proper references should be considered as questionable.
China (TL) | |
| Chinese Sci. Bull. 53,3567 (2008) |
USA | |
| Gunnar Färber specimens. |
Harvard Mine, Jamestown Mine, Jamestown, Jamestown District, Mother Lode Belt, Tuolumne Co., California, USA