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Chenguodaite

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Chenguodaite

Harvard Mine, Jamestown Mine, Jamestown, Jamestown District, Mother Lode Belt, Tuolumne Co., California, USA
Chenguodaite

Harvard Mine, Jamestown Mine, Jamestown, Jamestown District, Mother Lode Belt, Tuolumne Co., California, USA
Chenguodaite

Harvard Mine, Jamestown Mine, Jamestown, Jamestown District, Mother Lode Belt, Tuolumne Co., California, USA
Formula:
Ag9FeTe2S4
System:
Orthorhombic
Colour:
dark gray
Lustre:
Metallic
Hardness:
2 - 3
Name:
Named for late Prof. Chen Guoda (1912-2004), Chinese geologist and founder of Diwa-Geodepression theory of tectonics
Compare 'UM1989-18-S:AgFeTe'.


Classification of Chenguodaite

IMA status:
Approved
Approval Year:
2005
Nickel-Strunz 10th (pending) ed.:
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

Physical Properties of Chenguodaite

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

Optical Data of Chenguodaite

Type:
Isotropic
Bireflectance:
none
Internal Reflections:
none

Chemical Properties of Chenguodaite

IMA Formula:
Ag9FeTe2S4
Elements listed in formula:
Ag, Fe, S, Te - search for minerals with similar chemistry

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 Volume:
V 3,070.63 ų (Calculated from Unit Cell)
Z:
9
X-Ray Powder Diffraction Data:
d-spacingIntensity
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

Type Locality:
Funan Au deposit (Bunan), Zhaoyuan Co., Yantai Prefecture, Jiaodong Peninsula (Jiaodong Gold Province), Shandong Province, China
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:
SilverHessiteGalenaChalcopyriteAcanthite

Relationship of Chenguodaite to other Species

Related Minerals - Nickel-Strunz Grouping):
2.BA.05ChalcociteCu2S
2.BA.05DjurleiteCu31S16
2.BA.05GeeriteCu8S5
2.BA.05RoxbyiteCu1.78S
2.BA.10AniliteCu7S4
2.BA.10DigeniteCu1.8S
2.BA.15BorniteCu5FeS4
2.BA.20BellidoiteCu2Se
2.BA.20BerzelianiteCu2-xSe (x~0.12)
2.BA.25AthabascaiteCu5Se4
2.BA.25UmangiteCu3Se2
2.BA.30RickarditeCu3-xTe2
2.BA.30WeissiteCu5Te3
2.BA.35AcanthiteAg2S
2.BA.40MckinstryiteAg5Cu3S4
2.BA.40StromeyeriteCuAgS
2.BA.40dUM2003-13-S:AgAuCuAg6AuCu2S5
2.BA.45JalpaiteAg3CuS2
2.BA.45SelenojalpaiteAg3CuSe2
2.BA.50EucairiteCuAgSe
2.BA.55AguilariteAg4SeS
2.BA.55NaumanniteAg2Se
2.BA.60CervelleiteAg4TeS
2.BA.60HessiteAg2Te
2.BA.65HenryiteCu4Ag3Te4
2.BA.65StütziteAg5-xTe3 (x = 0.24-0.36)
2.BA.70ArgyroditeAg8GeS6
2.BA.70CanfielditeAg8SnS6
2.BA.70Putzite(Cu,Ag)8GeS6
2.BA.75FischesseriteAg3AuSe2
2.BA.75Penzhinite(Ag,Cu)4Au(S,Se)4
2.BA.75PetrovskaiteAuAgS
2.BA.75PetziteAg3AuTe2
2.BA.75UytenbogaardtiteAg3AuS2
2.BA.80Bezsmertnovite(Au,Ag)4Cu(Te,Pb)
2.BA.80BilibinskiteAu3Cu2Pb · nTeO2
2.BA.80Bogdanovite(Au,Te,Pb)3(Cu,Fe)

Other Names for Chenguodaite

Synonyms:

IMA2004-042a

UM2003-16-S:AgFeTe

Name in Other Languages:

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:
Gu Xiang-Ping, et al. (2008), Chenguodaite (Ag9FeTe2S4): a new tellurosulfide mineral from the gold district of East Shandong Peninsula, China. Chinese Science Bulletin 53(22), 3567-3573 (2008)


Gu Xiang-Ping, Watanabe, M., Hoshino, K., Shibata Y.: New find of silver tellurosulphides from the Funan gold deposit, East Shandong, China. European Journal of Mineralogy, 15:147-155 (2003)

Internet Links for Chenguodaite

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    • Localities for Chenguodaite

    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.
    China (TL)
     
    • Shandong Province
      • Jiaodong Peninsula (Jiaodong Gold Province)
        • Yantai Prefecture
          • Zhaoyuan Co.
    		Chinese Sci. Bull. 53,3567 (2008)
    USA
     
    • California
      • Tuolumne Co.
        • Mother Lode Belt
          • Jamestown District
            • Jamestown
              • Jamestown Mine (Jamestown group)
    		Gunnar Farber specimens.
    Mineral and/or Locality  
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