Chenguodaite

A valid IMA mineral species

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Chenguodaite

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

Chenguodaite

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

Chenguodaite

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

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About ChenguodaiteHide

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 (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.

Type Locality:

ⓘ Funan Au deposit (Bunan), Zhaoyuan City, Yantai, Shandong, China

Dimorph of:

Xuwenyuanite

Compare 'UM1989-18-S:AgFeTe'.

Unique IdentifiersHide

Mindat ID:

28953

Long-form identifier:

mindat:1:1:28953:3

Similar NamesHide

Chengdeite

A valid IMA mineral species

Ir₃Fe

IMA Classification of ChenguodaiteHide

IMA status:

Approved

IMA Formula:

Ag₉FeTe₂S₄

Approval year:

2005

First published:

2008

Type description 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.

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.

Symbol	Source	Reference for Standard
Cgu	IMA–CNMNC	Warr, 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:

Wavelength	R₁ (%)
400nm	22.1%
400nm	28.0%
470nm	27.8%
500nm	27.0%
520nm	26.2%
546nm	25.8%
560nm	25.5%
589nm	25.3%
620nm	26.4%
650nm	25.6%
680nm	25.7%
700nm	25.8%

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
Ag	68.846 %
Te	18.098 %
S	9.096 %
Fe	3.960 %

Calculated from ideal end-member formula.

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 Å³ (Calculated from Unit Cell)

Comment:

point Group n.d.; Space Group n.d.

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
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 Mode	Earliest 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 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:

Synonyms of ChenguodaiteHide

IMA2004-042a

UM2003-16-S:AgFeTe

Other Language Names for ChenguodaiteHide

Dutch:Chenguodaiet

German:Chenguodait

Related Minerals - Strunz-mindat Grouping Hide

2.BA.	Makotoite	Ag₁₂(Cu₃Au)S₈	Trig. 3m(32/m) : R3c
2.BA.	Alburnite	Ag₈GeTe₂S₄	Iso.
2.BA.	Dzierżanowskite	CaCu₂S₂	Trig. 3m(32/m) : P3m1
2.BA.	Xuwenyuanite	Ag₉Fe³⁺Te₂S₄	Iso. 43m : F43m
2.BA.	'Orileyite'	(Fe,Cu)₂As
2.BA.	Juxingite	Bi₆Cu⁺₁₃₈Cu²⁺₂Fe³⁺₃₀S₁₂₅	Iso. 43m : F43m
2.BA.05	Djurleite	Cu₃₁S₁₆	Mon. 2/m
2.BA.05	Geerite	Cu₈S₅	Trig. 3
2.BA.05	Roxbyite	Cu₅₈S₃₂	Tric. 1 : P1
2.BA.05	Chalcocite	Cu₂S	Mon. 2/m : P2₁/b
2.BA.10	Digenite	Cu₉S₅	Trig. 3m(32/m) : R3m
2.BA.10	Anilite	Cu₇S₄	Orth. mmm(2/m2/m2/m) : Pnma
2.BA.15	Bornite	Cu₅FeS₄	Orth. mmm(2/m2/m2/m) : Pbca
2.BA.20	Bellidoite	Cu₂Se	Tet. 4/m : P4₂/n
2.BA.20	Berzelianite	Cu_2-xSe (x ≈ 0.12)	Iso. m3m(4/m32/m) : Fm3m
2.BA.25	Athabascaite	Cu₅Se₄	Orth.
2.BA.25	Umangite	Cu₃Se₂	Tet. 42m : P42₁m
2.BA.30	Rickardite	Cu₇Te₅	Orth. mmm(2/m2/m2/m) : Pmmn
2.BA.30	Weissite	Cu_2-xTe	Hex. 6/mmm(6/m2/m2/m) : P6/mmm
2.BA.35	Acanthite	Ag₂S	Mon. 2/m : P2₁/m
2.BA.35	Spryite	Ag₈(As³⁺_0.5As⁵⁺_0.5)S₆	Orth. mm2 : Pna2₁
2.BA.40d	'UM2003-13-S:AgAuCu'	Ag₆AuCu₂S₅
2.BA.40	Mckinstryite	Ag_5-xCu_3+xS₄	Orth. mmm(2/m2/m2/m) : Pnma
2.BA.40	Stromeyerite	AgCuS	Orth. mmm(2/m2/m2/m)
2.BA.42	Honeaite	Au₃TlTe₂	Orth. mmm(2/m2/m2/m) : Pbcm
2.BA.45	Jalpaite	Ag₃CuS₂	Tet. 4/mmm(4/m2/m2/m) : I4₁/amd
2.BA.45	Selenojalpaite	Ag₃CuSe₂	Tet. 4/mmm(4/m2/m2/m) : I4₁/amd
2.BA.45	Kurilite	Ag₈Te₃Se	Trig. 3 : R3
2.BA.47	Spiridonovite	(Cu_1-xAg_x)₂Te	Trig. 3m(32/m) : P3c1
2.BA.50	Wuyanzhiite	Cu₂S	Tet. 422 : P4₃2₁2
2.BA.50	Eucairite	AgCuSe	Orth.
2.BA.52	'Argentite'	Ag₂S	Iso.
2.BA.55	Naumannite	Ag₂Se	Orth. 222 : P2₁2₁2₁
2.BA.55	Aguilarite	Ag₄SeS	Mon. 2/m
2.BA.60	Hessite	Ag₂Te	Mon. 2/m : P2₁/b
2.BA.60	Cervelleite	Ag₄TeS	Mon. 2/m
2.BA.65	Henryite	(Cu,Ag)_3+xTe₂ , with x ~ 0.40	Iso. m3m(4/m32/m) : Fd3c
2.BA.65	Stützite	Ag_5-xTe₃, x = 0.24-0.36	Hex. 6 : P6
2.BA.70	Argyrodite	Ag₈GeS₆	Orth. mm2 : Pna2₁
2.BA.70	Putzite	(Cu_4.7Ag_3.3)GeS₆	Iso. 43m : F43m
2.BA.70	Canfieldite	Ag₈SnS₆	Orth. mm2 : Pna2₁
2.BA.75	Fischesserite	Ag₃AuSe₂	Iso. 432 : I4₁32
2.BA.75	Uytenbogaardtite	Ag₃AuS₂	Trig. 3m(32/m) : R3c
2.BA.75	Penzhinite	(Ag,Cu)₄Au(S,Se)₄	Hex. 622 : P6₃22
2.BA.75	Petrovskaite	AuAgS	Mon.
2.BA.75	Petzite	Ag₃AuTe₂	Iso. 432 : I4₁32
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 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

mindat.org URL:

https://www.mindat.org/min-28953.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Mineral Dealers:

Buy from D. Joyce minerals

References for ChenguodaiteHide

Reference List:

Gu, Xiang-Ping, Watanabe, Makoto, Hoshino, Kenichi, Shibata, Yasuhiro (2003) New find of silver tellurosulphides from the Funan gold deposit, East Shandong, China. European Journal of Mineralogy, 15 (1) 147-155 doi:10.1127/0935-1221/2003/0015-0147

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 ⓘ Funan Au deposit (Bunan) (TL)	Gu et al. (2008)

Morocco
Souss-Massa Region Taroudant Province Taliouine Cercle Ouzioua Caïdat ⓘ Imourkhssen Cu±Mo±Au±Ag Porphyry Deposit	Ferraq et al. (2024)

Slovakia
Banská Bystrica Region Žarnovica District Hodruša-Hámre Hodruša-Hámre mines ⓘ Treiboltz	Berkh et al. (2014)

USA
California Tuolumne County Jamestown District Jamestown Jamestown Mine (Jamestown group) ⓘ Harvard Mine (Harvard Mine group; McCann claim; Mooney claim; Pacific claim; Vulture claim; Trio claim; Sobrante claim)	Färber (n.d.)

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Chenguodaite

About ChenguodaiteHide

Unique IdentifiersHide

Similar NamesHide

IMA Classification of ChenguodaiteHide

Classification of ChenguodaiteHide

Mineral SymbolsHide

Physical Properties of ChenguodaiteHide

Optical Data of ChenguodaiteHide

Chemistry of ChenguodaiteHide

Crystallography of ChenguodaiteHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of ChenguodaiteHide

Synonyms of ChenguodaiteHide

Other Language Names for ChenguodaiteHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for ChenguodaiteHide

References for ChenguodaiteHide

Localities for ChenguodaiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide