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Goldfieldite

Pictures (2 Images total)

Goldfieldit (xx)
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Goldfieldit (xx)

Bildbreite: 10 mm; Fundort: Prasolovskoe, Kunashir, Kurilen, Sachalin Oblast, Fernost, Russland

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-05-27
Locality: Prasolovskoe / Kunaschir, Insel / Kurilen / Sachalin, Oblast / Ferner Osten, Föderationskreis / Russland
Goldfieldit
Views (Image: 1243536061): 1625
Goldfieldit

Bildbreite: 3 mm; Fundort: Prasolovskoe, Kunashir, Kurilen, Sachalin Oblast, Fernost, Russland

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-05-28
Locality: Prasolovskoe / Kunaschir, Insel / Kurilen / Sachalin, Oblast / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Color dunkel bleigrau, eisenschwarz
Streak color schwarz
Hardness (Mohs) 4.75
Crystal System kubisch, I43m

Chemism

Chem­ical formula

(Cu42)Cu6Te4S13

Addi­tional chem. informa­tion

Mögliche Beimengungen werden in George 2017 beschrieben, siehe auch Tetraedrit-Gruppe.

Chem­ical com­po­si­tion

Kupfer, Tellur, Schwefel, Vakanz

Unit weight: 1562.72650002 u; Number of atoms in the formula: 29

Info

Empirical formula:

(Cu4Vc2)Cu6Te4S13

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Vacancy

Vc

0.00

2

6.90

0.0000000

0.0000000

Sulfur

S

26.67

13

44.83

32.0655000

416.8515000

Copper

Cu

40.66

10

34.48

63.5463000

635.4630000

Tellurium

Te

32.66

4

13.79

127.6030000

510.4120000

Anal­y­sis wt%

Cu : 46.18, Sb : 1.14, As : 7.72, Te : 17.68, S : 26.92 (Ref: Min.Petr.89)

Strunz 9th edi­tion incl. updates

2.GB.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
G: Sulfoarsenide, Sulfoantimonide, Sulfobismuthide
B: Insel(Neso)-Sulfarsenide, usw., mit zusätzlichen Schwefel (S)
05:Tennantit-Gruppe

Lapis Clas­sifica­tion

II/C.11-060

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1
11: Tetraedrit-Gruppe

Clas­sifica­tion by Hölzel

2.FB.130

2: SULFIDES
F: Sulfarsenites, Sulfantimonites, Sulfbismuthinites Trigonal Pyramids ~[AsS3]3-, ~[SbS3]3-, ~[BiS3]3-
B: Neso Sulfarsenites with additional S
1: Tennantite-Group

Dana 8th edi­tion

03.03.06.06

03: Sulfides - Sulfosalts
03: Sulfides - Sulfosalts where 3 < z/y < 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
06: Tetrahedrite Group (Isometric: I-43m)

IMA sta­tus

Neudefinition von der CNMNC anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Tetrahedrite Group  ⇒ Goldfieldit-Serie

Optical Properties

Color

dunkel bleigrau, eisenschwarz

Streak color

schwarz

Diaphane­ity (Trans­parency)

opak

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

43m

Space Group number

217

Space Group

I43m

Cell param­e­ters a (Å)

10.33

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

1102.303

X-Ray Pow­der Diffrac­tion

2.98(100),
2.579(80),
2.432(60),
2.023(60),
1.823(100),
1.555(100),
1.199(70),
1.184(70)

XRD chart Goldfieldite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4.75

VHN (Hard­ness Vick­ers)

317 (100g)

Density (g/cm³)

4.95

4.708 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

USA/Nevada/Esmeralda Co./Goldfield District/Mohawk Mine

Preface

Author (Name, Year)

Ransome, 1909

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 190

Neue Formel nach Y. Moelo et al., Eur.J.Mineral. 20 (2008) S.7-46. Zit. in Lapis 4/2008, S.38.

Moëlo, Y.; Makovicky, E.; Mozgova, N.N.; Jambor, J.L.; Cook, N.J.; Pring, A.; Paar,W.; Nickel, E.H.; Graeser, G.; Karup-Møller, S.; et al. Sulfosalt systematics: A review. Report of the sulfosalt sub-committee of the IMA commission on ore mineralogy. Eur. J. Mineral. 2008, 20, 7–46.

George, L. L., Cook, N. J., & Ciobanu, C. L. (2017). Minor and trace elements in natural tetrahedrite-tennantite: Effects on element partitioning among base metal sulphides. Minerals, 7(2), 17. doi:10.3390/min7020017

IMA group assignments



 
 
 
(Cu42)Cu6Te4S13
kubisch
I43m

 
 
 
Cu6Cu6(Sb2Te2)S13
kubisch
I43m

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Actuality: 19. Jun 2022 - 14:10:35

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Goldfieldite

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Goldfieldite

Russian

Голдфилдит

Simplified Chinese

碲黝铜矿

Japanese

ゴールドフィールド鉱

CNMNC symbol

Symbol

Gf

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