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Chenguodaite

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Chenguodait
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Chenguodait

Harvard Mine, Jamestown, Kalifornien; BB 2,4 mm

Copyright: Mabu
Contribution: Mabu 2017-04-04
Locality: Harvard Mine / Jamestown Mine / Jamestown / Tuolumne Co. / Kalifornien (California) / USA

Collectors Summary

Color dunkelgrau
Lustre Metallglanz
Hardness (Mohs) 2 - 3
Fracture uneben
Crystal System orthorhombisch,
Morphology Das Mineral bildet xenomorphe, teils verrundete Körner bis zu 70 µm Größe.

Chemism

Chem­ical formula

Ag9FeTe2S4

Chem­ical com­po­si­tion

Eisen, Silber, Tellur, Schwefel

Unit weight: 1410.12718 u; Number of atoms in the formula: 16

Info

Empirical formula:

Ag9FeTe2S4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

9.10

4

25.00

32.0655000

128.2620000

Iron

Fe

3.96

1

6.25

55.8452000

55.8452000

Silver

Ag

68.85

9

56.25

107.8682200

970.8139800

Tellurium

Te

18.10

2

12.50

127.6030000

255.2060000

Anal­y­sis wt%

Fe : 3.96, Ag : 68.86, Te : 18.10, S : 9.08 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

2.BA.60

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
B: Metallsulfide, M : S > 1 : 1 (hauptsächlich 2 : 1)
A: mit Kupfer (Cu), Silber (Ag), Gold (Au)
60:Hessit-Gruppe

Lapis Clas­sifica­tion

II/B.05-085

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
B: Sulfide, Selenide und Telluride mit Verhältnis Metall : S,Se,Te > 1:1
5: Sulfide, Selenide und Telluride mit vorwiegend Kupfer und Silber/Gold

Clas­sifica­tion by Hölzel

2.BE.110

2: SULFIDES
B: Sulfides (etc) with Me/S > 1/1 (mostly 2/1)
E: With Pb,Bi
1: Betekhtinite-Furutobeite-Group

IMA sta­tus

anerkannt 2005

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

dunkelgrau

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Crystallography

Crystal Sys­tem

orthorhombisch

Cell param­e­ters a (Å)

12.769

Cell param­e­ters b (Å)

14.814

Cell param­e­ters c (Å)

16.233

Cell param­e­ters a/b or c/a

0.862

Cell param­e­ters c/b

1.096

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Volumne (ų)

3070.634

X-Ray Pow­der Diffrac­tion

6.726(69), 6.416(39), 5.951(33), 3.265(100), 2.981(24), 2.188(71), 2.123(31), 1.949(33)

XRD chart Chenguodaite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphol­ogy

Das Mineral bildet xenomorphe, teils verrundete Körner bis zu 70 µm Größe.

Physical Properties

Hard­ness (Mohs)

2 - 3

Density (g/cm³)

6.85 ber.

Frac­ture

uneben

Preface

Name from

Professor für Geologie Chen Guoda (China)

References

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 (2003), 147-155
Mineralien Welt 03/09, Steffen Jahn, Neue Mineralien

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Hessite

Ag2Te

monoklin : 2/m : P21/c

2.BA.60

Cervelleite

Ag4TeS

monoklin : 2/m : P21/n

2.BA.60

Chenguodaite

Ag9FeTe2S4

2.BA.60

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Acanthite

Ag2S

monoklin : 2/m : P21/n

II/B.05-010

Naumannite

Ag2Se

orthorhombisch : 222 : P212121

II/B.05-030

Hessite

Ag2Te

monoklin : 2/m : P21/c

II/B.05-040

Aguilarite

Ag4SeS

II/B.05-050

Cervelleite

Ag4TeS

monoklin : 2/m : P21/n

II/B.05-060

Tsnigriite

Ag9SbTe3S3

monoklin : m, 2/m : Pm, P2/m

II/B.05-075

Stützite

Ag5-xTe3 {x = 0.24-0.36}

hexagonal : 6m2 : P62m

II/B.05-080

Chenguodaite

Ag9FeTe2S4

II/B.05-085

Empressite

AgTe

orthorhombisch : mmm : Pmnb

II/B.05-090

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Betekhtinite

(Cu,Fe)21Pb2S15

orthorhombisch : mmm : Immm

2.BE.100

Chenguodaite

Ag9FeTe2S4

2.BE.110

Furutobeite

(Cu,Ag)6PbS4

monoklin : 2, m, 2/m : C2, Cm, C2/m

2.BE.130

Schlemaite

(Cu,Ag)6(Pb,Bi)Se4

monoklin : 2/m : P21/m

2.BE.140

Calvertite

Cu5Ge0.5S4

kubisch : m3m, 432, 43m : Fm3m, F432, F43m

2.BE.150

Arcubisite

Ag6CuBiS4

2.BE.180

IMA Number

IMA 2004-042a

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Chenguodait
Google-Bilder-Suche - search for: Chenguodait
Mineralogisch-Petrographisches-Institut Hamburg - search for: Chenguodait

English pages

Mindat - search for: Chenguodaite
Webmineral - search for:Chenguodaite
Handbook-of-Mineralogy - search for: Chenguodaite
RRUFF - Raman, XRD and other mineral data - search for: Chenguodaite
RRUFF - References and PDF downloads - search for: Chenguodaite
American-Mineralogist-Crystal-Structure-Database - search for: Chenguodaite
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Russian pages

Webmineral.ru - search for: Ченгуодаит

Mineral Dealer

German pages

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Locations with GPS information