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Fletcherite

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Fletcher Mine, Centerville, Viburnum Trend District, Reynolds Co., Missouri, USA

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Formula:
Cu(Ni,Co)
 
2
S
 
4
System:IsometricColour:Steel gray
Hardness:5
Member of:Linnaeite Group > Thiospinel Group
Name:For the type locality.


Thiospinel Group

Classification of Fletcherite

IMA status:Approved
Strunz 8th edition ID:2/D.01-50
Nickel-Strunz 10th (pending) edition ID:2.DA.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
A : M:S = 3:4
Dana 8th edition ID:2.10.1.3

2 : SULFIDES
10 : AmBnXp, with (m+n):p = 3:4
Hey's CIM Ref.:3.11.12

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
11 : Sulphides etc. of Ni
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Type Occurrence of Fletcherite

Type Locality:Fletcher Mine, Centerville, Viburnum Trend District, Reynolds Co., Missouri, USA
Place of Conservation of Type Material:Smithsonian 137072
Year of Discovery:1977
Geological Setting of type material:Disseminated in copper minerals
Associated Minerals at type locality:
VaesitePyriteDigeniteCovelliteChalcopyrite
Bornite

Physical Properties of Fletcherite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Steel gray
Hardness (Mohs):5
Hardness (Vickers):VHN25=446 - 464 kg/mm2
Density (calculated):4.76 g/cm3

Crystallography of Fletcherite

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Space Group:Fd3m {F41/d 3 2/m}
Cell Parameters:a = 9.520Å
Unit Cell Volume:V 862.80 ų (Calculated from Unit Cell)
Z:8
Morphology:Minute crystals to 200 microns
Comment:Space group assumed

Chemical Properties of Fletcherite

Formula:
Cu(Ni,Co)
 
2
S
 
4
Essential elements:Cu, Ni, S
All elements listed in formula:Co, Cu, Ni, S
Common Impurities:Fe

Relationship of Fletcherite to other Species

Member of:Linnaeite Group > Thiospinel Group
Other Members of Group:

- +
Bornhardtite
Co
2+
 
Co
3+
2
Se
 
4
Cadmoindite
CdIn
 
2
S
 
4
Carrollite
Cu(Co,Ni)
 
2
S
 
4
Cuproiridsite
(Cu,Fe)Ir
 
2
S
 
4
Cuprokalininite
CuCr
 
2
S
 
4
Cuprorhodsite
(Cu,Fe)Rh
 
2
S
 
4
Daubréelite
Fe
2+
 
Cr
3+
2
S
 
4
Ferrorhodsite
(Fe,Cu)(Rh,Ir,Pt)
 
2
S
 
4
Florensovite
(Cu,Zn)Cr
 
1.5
Sb
 
0.5
S
 
4
Greigite
Fe
2+
 
Fe
3+
2
S
 
4
Indite
FeIn
 
2
S
 
4
Kalininite
ZnCr
 
2
S
 
4
Linnaeite
Co
2+
 
Co
3+
2
S
 
4
Malanite
Cu(Pt
3+
 
,Ir
3+
 
)
 
2
S
 
4
Polydymite
Ni
2+
 
Ni
3+
2
S
 
4
Siegenite
CoNi
 
2
S
 
4
 -NiCo
 
2
S
 
4
Trüstedtite
Ni
 
3
Se
 
4
Tyrrellite
Cu(Co
3+
 
,Ni
3+
 
)
 
2
Se
 
4
Violarite
Fe
2+
 
Ni
3+
2
S
 
4
Xingzhongite
(Pb,Cu,Fe)(Ir,Pt,Rh)
 
2
S
 
4
Related Minerals - Nickel-Strunz Grouping):

- +
2.DA.05Bornhardtite
Co
2+
 
Co
3+
2
Se
 
4
2.DA.05Carrollite
Cu(Co,Ni)
 
2
S
 
4
2.DA.05Cuproiridsite
(Cu,Fe)Ir
 
2
S
 
4
2.DA.05Cuprorhodsite
(Cu,Fe)Rh
 
2
S
 
4
2.DA.05Daubréelite
Fe
2+
 
Cr
3+
2
S
 
4
2.DA.05Florensovite
(Cu,Zn)Cr
 
1.5
Sb
 
0.5
S
 
4
2.DA.05Greigite
Fe
2+
 
Fe
3+
2
S
 
4
2.DA.05Indite
FeIn
 
2
S
 
4
2.DA.05Kalininite
ZnCr
 
2
S
 
4
2.DA.05Linnaeite
Co
2+
 
Co
3+
2
S
 
4
2.DA.05Malanite
Cu(Pt
3+
 
,Ir
3+
 
)
 
2
S
 
4
2.DA.05Polydymite
Ni
2+
 
Ni
3+
2
S
 
4
2.DA.05Siegenite
CoNi
 
2
S
 
4
 -NiCo
 
2
S
 
4
2.DA.05Trüstedtite
Ni
 
3
Se
 
4
2.DA.05Tyrrellite
Cu(Co
3+
 
,Ni
3+
 
)
 
2
Se
 
4
2.DA.05Violarite
Fe
2+
 
Ni
3+
2
S
 
4
2.DA.05Xingzhongite
(Pb,Cu,Fe)(Ir,Pt,Rh)
 
2
S
 
4
2.DA.05Ferrorhodsite
(Fe,Cu)(Rh,Ir,Pt)
 
2
S
 
4
2.DA.05Cadmoindite
CdIn
 
2
S
 
4
2.DA.05Cuprokalininite
CuCr
 
2
S
 
4
2.DA.10Rhodostannite
Cu
 
2
FeSn
 
3
S
 
8
2.DA.10Toyohaite
Ag
 
2
FeSn
 
3
S
 
8
2.DA.15Brezinaite
Cr
 
3
S
 
4
2.DA.15Heideite
(Fe,Cr)
 
1.15
(Ti,Fe)
 
2
S
 
4
2.DA.20Inaglyite
Cu
 
3
Pb(Ir,Pt)
 
8
S
 
16
2.DA.20Konderite
Cu
 
3
Pb(Rh,Pt,Ir)
 
8
S
 
16
2.DA.25Kingstonite
(Rh,Ir,Pt)
 
3
S
 
4
Related Minerals - Hey's Index Grouping:

- +
3.11.1Heazlewoodite
Ni
 
3
S
 
2
3.11.2Godlevskite
(Ni,Fe)
 
9
S
 
8
3.11.3Millerite
NiS
3.11.4Polydymite
Ni
2+
 
Ni
3+
2
S
 
4
3.11.5Vaesite
NiS
 
2
3.11.6Shandite
Ni
 
3
Pb
 
2
S
 
2
3.11.7Donharrisite
Ni
 
8
Hg
 
3
S
 
9
3.11.8Violarite
Fe
2+
 
Ni
3+
2
S
 
4
3.11.9Pentlandite
(Fe,Ni)
 
9
S
 
8
3.11.10Bravoite
(Fe,Ni)S
 
2
3.11.11Siegenite
CoNi
 
2
S
 
4
 -NiCo
 
2
S
 
4
3.11.13Villamaninite
(Cu,Ni,Co,Fe)S
 
2
3.11.14Mäkinenite
γ-NiSe
3.11.15Sederholmite
beta-NiSe
3.11.16Trüstedtite
Ni
 
3
Se
 
4
3.11.17Wilkmanite
Ni
 
3
Se
 
4
3.11.18Kullerudite
NiSe
 
2
3.11.19Penroseite
(Ni,Co,Cu)Se
 
2
3.11.20Tyrrellite
Cu(Co
3+
 
,Ni
3+
 
)
 
2
Se
 
4
3.11.21Imgreite
NiTe (?)
3.11.22Melonite
NiTe
 
2
3.11.23Kitkaite
NiTeSe
3.11.24Dienerite
3.11.25Orcelite
Ni
 
5-x
As
 
2
3.11.26Maucherite
Ni
 
11
As
 
8
3.11.27Nickeline
NiAs
3.11.28Rammelsbergite
NiAs
 
2
3.11.29Pararammelsbergite
NiAs
 
2
3.11.30Nickelskutterudite
NiAs
 
2-3
3.11.31Oregonite
Ni
 
2
FeAs
 
2
3.11.32Westerveldite
(Fe,Ni,Co)As
3.11.33Langisite
(Co,Ni)As
3.11.34Gersdorffite
NiAsS
3.11.35Jolliffeite
NiAsSe
3.11.36Breithauptite
NiSb
3.11.38Ullmannite
NiSbS
3.11.39Willyamite
(Co,Ni)SbS

Other Names for Fletcherite

Synonyms:
IMA1976-044
Other Languages:
German:Fletcherit
Russian:Флетчерит
Spanish:Fletcherita

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 Fletcherite

Reference List:

- +
Craig, J.R, Carpenter, A.B. (1977) Fletcherite,Cu(Ni,Co)2S4, a new thiospinel from the Viburnum Trend (new lead belt), Missouri. Economic Geology, 72, 480-486.

Fleischer, M., Pabst, A., Mandarino, J.A., Chao, G.Y. (1977) New Mineral Names. American Mineralogist, 62, 1057-1061.

Internet Links for Fletcherite

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    • Localities for Fletcherite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? 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.
    Canada
     
    • Ontario
      • Cochrane District
        • Timmins Area
          • Kidd Township
    		ontariominerals.com
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
    		Ondruš P, Veselovský F, Gabašová A, Hloušek J, Šrein V, Vavrín I, Skála R, Sejkora J, Drábek M (2003) Primary minerals of the Jáchymov ore district, Journal of the Czech Geological Society 48, 19-147
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Shinkolobwe
    		Gauthier, G., King, V., and Morgan, R., in press, Carrollite from Kamoya South II Mine.
    Germany
     
    • Saxony-Anhalt
      • Stassfurt Potash Deposit
    		L. Kruszewski specimen
    Driesner, T & Siemroth, J. (1993) Mineralogie und Petrographie einer Gangstruktur im Leinesteinsalz des Bernburger Sattels, Sachsen-Anhalt. Beihefte zum European Journal of Mineralogy 5, 1, 277; Witzke, T. (2012): Gillardit, Cu3Ni(OH)6Cl2, und Avdoninit, K2Cu5Cl8(OH)4 • H2O, zwei Neufunde von Bernburg, Sachsen-Anhalt. Aufschluss 63, 209-211.
    Portugal
     
    • Aveiro District
      • Albergaria-a-Velha
        • Branca/Ribeira de Fráguas
    		- J. Marques de Sá & C. Leal Gomes (2010): LES MINES DE CUIVRE ET NICKEL DE PALHAL ET TELHADELA, PORTUGAL. Le Regne Mineral, nº92, xx-xx.
    Spain
     
    • Valencian Community
      • Castellón
        • Chóvar
    		Casanova Honrubia, Juan Miguel & Canseco Caballé, Manuel, 2002, Minerales de la Comunidad Valenciana : 237 p. Ed. Caja de Ahorros del Mediterráneo. Alicante
    USA
     
    • Missouri
      • Reynolds Co.
        • Viburnum Trend District
          • Centerville
    		Econ. Geol., 72, 480-486.
          • Ellington
    		Rocks & Min.: 64:22&26.
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