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Gallite

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Formula:
CuGaS2
System:
Tetragonal
Colour:
Grey
Hardness:
3 - 3½
Name:
For the gallium content.

Classification of Gallite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.CB.10a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
B : With Zn, Fe, Cu, Ag, etc.
2.9.1.3

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
3.5.18

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
5 : Sulphides etc. of Hg and Tl
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http://www.mindat.org/min-1644.html
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First Recorded Occurrence of Gallite

General Appearance of First Recorded Material:
Massive, as included grains and exsolution lamellae in other sulfides.
Place of Conservation of First Recorded Material:
Berlin Technical University, Berlin, Germany, 86/67, 87/564, 396.
Year of Discovery:
1958

Occurrences of Gallite

Geological Setting:
Base metal deposits with high gallium content.

Physical Properties of Gallite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Grey
Streak:
Greyish black
Hardness (Mohs):
3 - 3½
Density:
4.2 g/cm3 (Measured)    4.35 g/cm3 (Calculated)

Crystallography of Gallite

Crystal System:
Tetragonal
Class (H-M):
4 2m - Scalenohedral
Space Group:
I4 2d
Cell Parameters:
a = 5.360Å, c = 10.49Å
Ratio:
a:c = 1 : 1.957
Unit Cell Volume:
V 301.37 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Massive, inclusions, exsolved lamellae to 2mm.
Twinning:
Parallel to {112}, {111}

Epitaxial Relationships of Gallite

Epitaxial Minerals:
Epitaxi Comments:
Gallite exsolves as lamellae || {100} and {111} of sphalerite, and in turn shows exsolution of sphalerite on {001} of gallite.
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.07 (100)
1.876 (90)
1.610 (90)
1.089 (90)
1.894 (60)
1.215 (60)
1.076 (60)

Optical Data of Gallite

Type:
Anisotropic
Anisotropism:
low
Reflectivity:
400nmR=20.7%
420nmR=19.9%
440nmR=19.4%
460nmR=18.8%
480nmR=18.5%
500nmR=18.1%
520nmR=17.9%
540nmR=17.7%
560nmR=17.5%
580nmR=17.4%
600nmR=17.2%
620nmR=17.1%
640nmR=17.0%
660nmR=16.9%
680nmR=16.8%
700nmR=16.6%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 20.7%.

Chemical Properties of Gallite

Formula:
CuGaS2
Essential elements:
All elements listed in formula:
Common Impurities:
Pb,Zn,Fe,Ge

Relationship of Gallite to other Species

Other Members of Group:
2.CB.05aColoradoiteHgTe
2.CB.05aHawleyiteCdS
2.CB.05aMetacinnabarHgS
2.CB.05cPolhemusite(Zn,Hg)S
2.CB.05bSakuraiite(Cu,Zn,Fe)3(In,Sn)S4
2.CB.05aSphaleriteZnS
2.CB.05aStilleiteZnSe
2.CB.05aTiemanniteHgSe
2.CB.05UM1998-15-S:CuFeZnCu2Fe3Zn5S10
2.CB.05aRudashevskyite(Fe,Zn)S
2.CB.10aChalcopyriteCuFeS2
2.CB.10aEskeborniteCuFeSe2
2.CB.10bHaycockiteCu4Fe5S8
2.CB.10aLenaiteAgFeS2
2.CB.10bMooihoekiteCu9Fe9S16
2.CB.10bPutoraniteCu9(Fe,Ni)9S16
2.CB.10aRoquesiteCuInS2
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16
2.CB.10aLaforêtiteAgInS2
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4
2.CB.15aFerrokësteriteCu2(Fe,Zn)SnS4
2.CB.15aHocartiteAg2(Fe2+,Zn)SnS4
2.CB.15aIdaiteCu5FeS6
2.CB.15aKësteriteCu2(Zn,Fe)SnS4
2.CB.15aKuramiteCu3SnS4
2.CB.15bMohiteCu2SnS3
2.CB.15aPirquitasiteAg2ZnSnS4
2.CB.15aStanniteCu2(Fe,Zn)SnS4
2.CB.15cStannoiditeCu6+Cu22+(Fe2+,Zn)3Sn2S12
2.CB.15aVelikiteCu2HgSnS4
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.20ChatkaliteCu6FeSn2S8
2.CB.20MawsoniteCu6Fe2SnS8
2.CB.30ColusiteCu26V2(As,Sn,Sb)6S32
2.CB.30GermaniteCu13Fe2Ge2S16
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32
2.CB.30NekrasoviteCu26V2(Sn,As,Sb)6S32
2.CB.30StibiocolusiteCu13V4(Sb,Sn,As)3S16
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32
2.CB.35aHemusiteCu6SnMoS8
2.CB.35aKiddcreekiteCu6SnWS8
2.CB.35aPolkovicite(Fe,Pb)3(Ge,Fe)1-xS4
2.CB.35aRenierite(Cu,Zn)11(Ge,As)2Fe4S16
2.CB.35aVincienniteCu7+Cu32+Fe22+Fe23+Sn(As,Sb)S16
2.CB.35aMorozeviczite(Pb,Fe)3Ge1-xS4
2.CB.35bCatamarcaiteCu6GeWS8
2.CB.40LautiteCuAsS
2.CB.45CadmoseliteCdSe
2.CB.45GreenockiteCdS
2.CB.45Wurtzite(Zn,Fe)S
2.CB.45RambergiteMnS
2.CB.45Buseckite(Fe,Zn,Mn)S
2.CB.55aCubaniteCuFe2S3
2.CB.55bIsocubaniteCuFe2S3
2.CB.60PicotpauliteTlFe2S3
2.CB.60RaguiniteTlFeS2
2.CB.65ArgentopyriteAgFe2S3
2.CB.65SternbergiteAgFe2S3
2.CB.70SulvaniteCu3VS4
2.CB.75VulcaniteCuTe
2.CB.80EmpressiteAgTe
2.CB.85MuthmanniteAuAgTe2
3.5.1CinnabarHgS
3.5.2HypercinnabarHgS
3.5.3MetacinnabarHgS
3.5.4ImiteriteAg2HgS2
3.5.5TiemanniteHgSe
3.5.6BalkaniteCu9Ag5HgS8
3.5.7Danielsite(Cu,Ag)14HgS8
3.5.8ColoradoiteHgTe
3.5.9Gortdrumite(Cu,Fe)6Hg2S5
3.5.10Polhemusite(Zn,Hg)S
3.5.11CarliniteTl2S
3.5.12CrookesiteCu7(Tl, Ag)Se4
3.5.13SabatieriteCu6TlSe4
3.5.14PicotpauliteTlFe2S3
3.5.15RaguiniteTlFeS2
3.5.16ThalcusiteTl2Cu3FeS4
3.5.17BukoviteTl2(Cu,Fe)4Se4
3.5.19RoquesiteCuInS2
3.5.20InditeFeIn2S4

Other Names for Gallite

Name in Other Languages:
German:Gallit
Russian:Галлит
Simplified Chinese:硫镓铜矿
Spanish:Gallita
Traditional Chinese:硫鎵銅礦

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 Gallite

Reference List:
Strunz, H., Geier, B.H., and Seeliger, E. (1958) Gallite, CuGaS2, das erste Selbst dige Galliummineral, und seine Verbreitung in den Erzen der Tsumeb- und Kipushi-Mine. Neues Jahrbuch für Mineralogie, Monatshefte: 241-264.

American Mineralogist (1959): 44: 906.

Internet Links for Gallite

Localities for Gallite

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.
Bulgaria
 
  • Pazardzhik Oblast (Pazardjik Oblast)
    • Panagyurishte (Panagurishte) Obshtina
      • Levski
Pavel Kartashov (Mindat message www.mindat.org/mesg-7-84159.html); Handbook of Mineralogy; Bogdanov, K., Tsonev, D., & Popov, K. (2004). Mineral Assemblages And Genesis Of The Cu-Au Epithermal Deposits In The Southern Part Of The Panaguyrishte Ore District, Bulgaria. Bulletin of the Geological Society of Greece, 36:406-415
  • Sofiya Oblast (Sofia Oblast)
    • Chelopech
American Mineralogist (1966): 51: 29-36
Cuba
 
Handbook of Mineralogy
Democratic Republic of Congo (Zaïre)
 
  • Katanga (Shaba)
    • Kipushi
Neues Jahrbuch für Mineralogie, Monatshefte (1958): 241-264.; Kamona, A.F., Lévêque, J., Friedrich, G., and Haack, U. (1999): Mineralium Deposita 34, 273-283.; Kampunzu, A.B., Cailteux, J.L.H., Kamona, A.F., Intiomale, M.M., and Melcher, F. (2009): Ore Geology Reviews 35, 263-297.; Chabu, M. (1995). The Geochemistry Of Phlogopite And Chlorite From The Kipushi Zn-Pb--Gu Deposit, Shaba, Zaire., Canadian Mineralogist 33, 547-558.
Namibia
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Strunz, H., Geier, B.H., and Seeliger, E. (1958) Gallite, CuGaS2, das erste selbständige Galliummineral, und seine Verbreitung in den Erzen der Tsumeb- und Kipushi-Mine. Neues Jahrbuch für Mineralogie (1958), Monatshefte: 241-264.
Mineral and/or Locality  
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