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Goldfieldite

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Mohawk Mine, Goldfield District, Esmeralda Co., Nevada, USA
© JBS 2006

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Formula:
Cu
 
12
(Te,Sb,As)
 
4
S
 
13
Hardness:3 - 3½
Name:After the type locality, the Mohawk Mine, Goldfield, Nevada, USA.


Tetrahedrite Group.

Classification of Goldfieldite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:2/C.11-60
Nickel-Strunz 10th (pending) edition ID:2.GB.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
B : Neso-sulfarsenites, etc. with additional S
Dana 8th edition ID:3.3.6.6

3 : SULFOSALTS
3 : 3 <ø < 4
Hey's CIM Ref.:5.1.6

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
1 : Sulpharsenites etc. of Cu
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Type Occurrence of Goldfieldite

Type Locality:Mohawk Mine, Goldfield District, Esmeralda Co., Nevada, USA
Year of Discovery:1909

Physical Properties of Goldfieldite

Hardness (Mohs):3 - 3½
Structure
  Reference
Pohl D Liessmann W Okrugin V M (1996) Rietveld analysis of selenium-bearing goldfieldites Locality: Ozernoya deposit, Kamchatka, Russia. Neues Jahrbuch fur Mineralogie, Monatshefte 1996:1-8.

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More Crystal Structures
Click here to view more crystal structures at the American Mineralogist Crystal Structure Database

Chemical Properties of Goldfieldite

Formula:
Cu
 
12
(Te,Sb,As)
 
4
S
 
13
Essential elements:Cu, S, Te
All elements listed in formula:As, Cu, S, Sb, Te
Common Impurities:Ag,Fe,Zn,Bi

Relationship of Goldfieldite to other Species

Member of Group:
Tetrahedrite Group:
A
 
12
B
 
4
X
 
13
Related Minerals - Nickel-Strunz Grouping):

- +
2.GB.05Argentotennantite
(Ag,Cu)
 
10
(Zn,Fe)
 
2
(As,Sb)
 
4
S
 
13
2.GB.05Freibergite
(Ag
 
4+2x
Cu
 
2-2x
)[(Cu, Ag)
 
4
(Fe, Zn)
 
2
]Sb
 
4
S
 
12
S
 
1-x
 (0 < x < 1)
2.GB.05Giraudite
(Cu,Zn,Ag)
 
12
(As,Sb)
 
4
(Se,S)
 
13
2.GB.05Hakite
(Cu,Hg,Ag)
 
12
Sb
 
4
(Se,S)
 
13
2.GB.05Tennantite
(Cu,Ag,Fe,Zn)
 
12
As
 
4
S
 
13
2.GB.05Tetrahedrite
(Cu,Fe,Ag,Zn)
 
12
Sb
 
4
S
 
13
2.GB.10Selenostephanite
Ag
 
5
Sb(Se,S)
 
4
2.GB.10Stephanite
Ag
 
5
SbS
 
4
2.GB.15Pearceite
[(Ag,Cu)
 
6
(As,Sb)
 
2
S
 
7
][Ag
 
9
CuS
 
4
]
2.GB.15Polybasite
[(Ag,Cu)
 
6
(Sb,As)
 
2
S
 
7
][Ag
 
9
CuS
 
4
]
2.GB.15UM2003-14
Ag
 
16
FeBiTe
 
3
S
 
8
2.GB.15Selenopolybasite
[(Ag,Cu)
 
6
(Sb,As)
 
2
(S,Se)
 
7
][Ag
 
9
Cu(S,Se)
 
2
Se
 
2
]
2.GB.15Cupropearceite
[Cu
 
6
As
 
2
S
 
7
][Ag
 
9
CuS
 
4
]
2.GB.15Cupropolybasite
[Cu
 
6
Sb
 
2
S
 
7
][Ag
 
9
CuS
 
4
]
2.GB.15UM1979-17-S:BiCuFe
Cu
 
18
Fe
 
4
BiS
 
16
2.GB.20Galkhaite
(Cs,Tl)(Hg,Cu,Zn)
 
6
(As,Sb)
 
4
S
 
12
Related Minerals - Hey's Index Grouping:

- +
5.1.1Sinnerite
Cu
 
6
As
 
4
S
 
9
5.1.2Tennantite
(Cu,Ag,Fe,Zn)
 
12
As
 
4
S
 
13
5.1.4Chalcostibite
CuSbS
 
2
5.1.5Tetrahedrite
(Cu,Fe,Ag,Zn)
 
12
Sb
 
4
S
 
13
5.1.7Emplectite
CuBiS
 
2
5.1.8Cuprobismutite
Cu
 
10
Bi
 
12
S
 
23
5.1.9Wittichenite
Cu
 
3
BiS
 
3
5.1.10Hodrušite
Cu
 
8
Bi
 
12
S
 
22
5.1.11Giraudite
(Cu,Zn,Ag)
 
12
(As,Sb)
 
4
(Se,S)
 
13
5.1.11Permingeatite
Cu
 
3
SbSe
 
4

Other Names for Goldfieldite

Other Languages:
German:Goldfieldit
Russian:Голдфилдит
Spanish:Goldfieldita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Goldfieldite

Reference List:Ransome (1909), USGS Professional Paper 66: 116.

Sharwood (1911), Economic Geology: 6: 31.

Shannon (1917), American Journal of Science: 44: 469.

Tolman and Abrose (1934), Economic Geology: 29: 255.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 384.

Tschermaks Mineralogische und Petrographische Mitteilungen: 21: 1-10.

Shimizu, M. and C.J. Stanley (1991) Coupled substitutions in goldfieldite tetrahedrite minerals from the Iriki mine, Japan. Mineralogical Magazine: 55: 515-519.

Internet Links for Goldfieldite

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    Localities for Goldfieldite

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