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Haycockite

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Formula:
Cu
 
4
Fe
 
5
S
 
8
System:OrthorhombicColour:Brass yellow
Hardness:4½
Member of:Talnakhite Group
Name:Name: In honor of Maurice Hall Haycock (1900-1988), Canadian mineralogist, former Head, Mineralogy Section, Department of Energy, Mines and Resources, Ottawa, Ontario. Haycock, as a graduate student at Princeton in 1931, gave a brief description of the mineral that became haycockite in an unpublished report.


Talnakhite group

Classification of Haycockite

IMA status:Approved 1971
Strunz 8th edition ID:2/C.04-20
Nickel-Strunz 10th (pending) edition ID:2.CB.10b

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.
Dana 8th edition ID:2.9.8.2

2 : SULFIDES
9 : AmBnXp, with (m+n):p = 1:1
Hey's CIM Ref.:3.1.27

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

Type Locality:Mooihoek Farm 255 KT, Lydenburg District, Eastern Bushveld Complex, Mpumalanga Province, South Africa
Place of Conservation of Type Material:Smithsonian Museum
Year of Discovery:1971

Physical Properties of Haycockite

Diaphaneity (Transparency):Opaque
Colour:Brass yellow
Comment:Does not easily tarnish
Streak:Black
Hardness (Mohs):4½
Hardness (Vickers):VHN100=206 - 231 kg/mm2
Density (calculated):4.33 g/cm3

Crystallography of Haycockite

Crystal System:Orthorhombic
Class (H-M):2 2 2 - Disphenoidal
Cell Parameters:a = 10.705(5) Å, b = 10.734(5) Å, c = 31.630(15) Å
Ratio:a:b:c = 0.997 : 1 : 2.947
Unit Cell Volume:V 3,634.52 ų (Calculated from Unit Cell)
Z:12
Morphology:Grains to 500 microns
Twinning:On {103} polysynthetic

Optical Data of Haycockite

Type:Anisotropic
Anisotropism:Weak to moderate

Chemical Properties of Haycockite

Formula:
Cu
 
4
Fe
 
5
S
 
8
Essential elements:Cu, Fe, S
All elements listed in formula:Cu, Fe, S
Common Impurities:Ni

Relationship of Haycockite to other Species

Member of:Talnakhite Group
Other Members of Group:

- +
Mooihoekite
Cu
 
9
Fe
 
9
S
 
16
Talnakhite
Cu
 
9
(Fe,Ni)
 
8
S
 
16
Related Minerals - Nickel-Strunz Grouping):

- +
2.CB.05aColoradoite
HgTe
2.CB.05aHawleyite
CdS
2.CB.05aMetacinnabar
HgS
2.CB.05cPolhemusite
(Zn,Hg)S
2.CB.05bSakuraiite
(Cu,Zn,Fe)
 
3
(In,Sn)S
 
4
2.CB.05aSphalerite
ZnS
2.CB.05aStilleite
ZnSe
2.CB.05aTiemannite
HgSe
2.CB.05UM1998-15-S:CuFeZn
Cu
 
2
Fe
 
3
Zn
 
5
S
 
10
2.CB.05aRudashevskyite
(Fe,Zn)S
2.CB.10aChalcopyrite
CuFeS
 
2
2.CB.10aEskebornite
CuFeSe
 
2
2.CB.10aGallite
CuGaS
 
2
2.CB.10aLenaite
AgFeS
 
2
2.CB.10bMooihoekite
Cu
 
9
Fe
 
9
S
 
16
2.CB.10bPutoranite
Cu
 
9
(Fe,Ni)
 
9
S
 
16
2.CB.10aRoquesite
CuInS
 
2
2.CB.10bTalnakhite
Cu
 
9
(Fe,Ni)
 
8
S
 
16
2.CB.10aLaforêtite
AgInS
 
2
2.CB.15aČernýite
Cu
 
2
(Cd,Zn,Fe)SnS
 
4
2.CB.15aFerrokesterite
Cu
 
2
(Fe,Zn)SnS
 
4
2.CB.15aHocartite
Ag
 
2
(Fe
2+
 
,Zn)SnS
 
4
2.CB.15aIdaite
Cu
 
5
FeS
 
6
2.CB.15aKesterite
Cu
 
2
(Zn,Fe)SnS
 
4
2.CB.15aKuramite
Cu
 
3
SnS
 
4
2.CB.15bMohite
Cu
 
2
SnS
 
3
2.CB.15aPirquitasite
Ag
 
2
ZnSnS
 
4
2.CB.15aStannite
Cu
 
2
(Fe,Zn)SnS
 
4
2.CB.15cStannoidite
Cu
+
6
Cu
2+
2
(Fe
2+
 
,Zn)
 
3
Sn
 
2
S
 
12
2.CB.15aVelikite
(Cu,Hg)
 
11
Sn
 
4
S
 
16
2.CB.15cUM2006-11-S:CuFeGeZn
Cu
 
8
(Fe,Zn)
 
3
Ge
 
2
S
 
12
 (?)
2.CB.20Chatkalite
Cu
 
6
FeSn
 
2
S
 
8
2.CB.20Mawsonite
Cu
 
6
Fe
 
2
SnS
 
8
2.CB.30Colusite
Cu
 
26
V
 
2
(As,Sn,Sb)
 
6
S
 
32
2.CB.30Germanite
Cu
 
13
Fe
 
2
Ge
 
2
S
 
16
2.CB.30Germanocolusite
Cu
 
26
V
 
2
(Ge,As)
 
6
S
 
32
2.CB.30Nekrasovite
Cu
 
26
V
 
2
(Sn,As,Sb)
 
6
S
 
32
2.CB.30Stibiocolusite
Cu
 
13
V
 
4
(Sb,Sn,As)
 
3
S
 
16
2.CB.30Ovamboite
Cu
 
20
(Fe,Cu,Zn)
 
6
W
 
2
Ge
 
6
S
 
32
2.CB.30Maikainite
Cu
 
20
(Fe,Cu)
 
6
Mo
 
2
Ge
 
6
S
 
32
2.CB.35aHemusite
Cu
 
6
SnMoS
 
8
2.CB.35aKiddcreekite
Cu
 
6
SnWS
 
8
2.CB.35aPolkovicite
(Fe,Pb)
 
3
(Ge,Fe)
 
1-x
S
 
4
2.CB.35aRenierite
(Cu,Zn)
 
11
(Ge,As)
 
2
Fe
 
4
S
 
16
2.CB.35aVinciennite
Cu
+
7
Cu
2+
3
Fe
2+
2
Fe
3+
2
Sn(As,Sb)S
 
16
2.CB.35aMorozeviczite
(Pb,Fe)
 
3
Ge
 
1-x
S
 
4
2.CB.35bCatamarcaite
Cu
 
6
GeWS
 
8
2.CB.40Lautite
CuAsS
2.CB.45Cadmoselite
CdSe
2.CB.45Greenockite
CdS
2.CB.45Wurtzite
(Zn,Fe)S
2.CB.45Rambergite
MnS
2.CB.45Buseckite
(Fe,Zn,Mn)S
2.CB.55aCubanite
CuFe
 
2
S
 
3
2.CB.55bIsocubanite
CuFe
 
2
S
 
3
2.CB.60Picotpaulite
TlFe
 
2
S
 
3
2.CB.60Raguinite
TlFeS
 
2
2.CB.65Argentopyrite
AgFe
 
2
S
 
3
2.CB.65Sternbergite
AgFe
 
2
S
 
3
2.CB.70Sulvanite
Cu
 
3
VS
 
4
2.CB.75Vulcanite
CuTe
2.CB.80Empressite
AgTe
2.CB.85Muthmannite
AuAgTe
 
2
Related Minerals - Hey's Index Grouping:

- +
3.1.1Chalcocite
Cu
 
2
S
3.1.2Djurleite
Cu
 
31
S
 
16
3.1.3Digenite
Cu
 
9
S
 
5
3.1.4Anilite
Cu
 
7
S
 
4
3.1.5Roxbyite
Cu
 
9
S
 
5
3.1.6Spionkopite
Cu
 
39
S
 
28
3.1.7Geerite
Cu
 
8
S
 
5
3.1.8Covellite
CuS
3.1.9Berzelianite
Cu
 
2
Se
3.1.10Bellidoite
Cu
 
2
Se
3.1.11Umangite
Cu
 
3
Se
 
2
3.1.12Yarrowite
Cu
 
9
S
 
8
3.1.13Athabascaite
Cu
 
5
Se
 
4
3.1.14Klockmannite
CuSe
3.1.15Krut'aite
CuSe
 
2
3.1.16Weissite
Cu
 
2-x
Te
3.1.17Rickardite
Cu
 
7
Te
 
5
3.1.18Vulcanite
CuTe
3.1.19Bambollaite
Cu(Se,Te)
 
2
3.1.20Lautite
CuAsS
3.1.21Mgriite
Cu
 
3
AsSe
 
3
3.1.22Cubanite
CuFe
 
2
S
 
3
3.1.23Bornite
Cu
 
5
FeS
 
4
3.1.24Fukuchilite
Cu
 
3
FeS
 
8
3.1.25Chalcopyrite
CuFeS
 
2
3.1.26Mooihoekite
Cu
 
9
Fe
 
9
S
 
16
3.1.28Isocubanite
CuFe
 
2
S
 
3
3.1.29Idaite
Cu
 
5
FeS
 
6
3.1.30Nukundamite
(Cu,Fe)
 
4
S
 
4
3.1.31Putoranite
Cu
 
9
(Fe,Ni)
 
9
S
 
16
3.1.32Orickite
2CuFeS
 
2
 · H
 
2
O
3.1.33Eskebornite
CuFeSe
 
2
3.1.34Chaméanite
(Cu,Fe)
 
4
As(Se,S)
 
4
3.1.35Talnakhite
Cu
 
9
(Fe,Ni)
 
8
S
 
16

Other Names for Haycockite

Synonyms:
IMA1971-028
Other Languages:
German:Haycockit
Russian:Хейкокит
Spanish:Haycockita

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 Haycockite

Reference List:

- +
CABRI, L.J. & HALL, S.R. (1972): Mooihoekite and haycockite, two new copper-iron sulfides and their relationship to chalcopyrite and talnakhite. American Mineralogist 57, 689-708.
ROWLAND, J.F. & HALL, S.R. (1973): The crystal structure of haycockite, Cu4Fe5S8. American Mineralogist, 58, 1110 abstract????.
ROWLAND, J.F. & HALL, S.R. (1975) Haycockite, Cu4Fe5S8: a superstructure in the chalcopyrite series. Acta crystallographica B31, 2105-2112.
DALTRY, V.D.C. (1997) Mineralogy of South Africa: type mineral species and type mineral names. Handbook No. 15, Council for Geoscience / Geological Survey, Pretoria, South Africa, 114 pages.

B. V. Korzun et al. (2012): Preparation, structural and Mossbauer investigations of haycockite, Cu4Fe5S8. Poster P09-P09, 18th International Conference on Ternary and Multinary Compounds, 27 -31 August 2012, Salzburg. [http://www.conventus.de/fileadmin/media/2012/ictmc/Posters.pdf]

Internet Links for Haycockite

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    • Localities for Haycockite

    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.
    Atlantic Ocean
     
    • Mid-Atlantic Ridge complex
    		Econ Geol (1976) 71:1515-1525
    Japan
     
    • Honshu Island
      • Chubu region
        • Shizuoka Prefecture
    		Onuki et al (1981) Ganseki-Koubutsu-Koshogaku Zasshi, 76, 372-375.
    Mexico
     
    • Sonora
      • Mun. de Moctezuma
    		Lapis 2001(1), 11-40
    Poland
     
    • Lower Silesia (Dolnośląskie)
      • Legnica
        • Lubin District
    		Kucha H. 2007: Mineralogia kruszcowa i geochemia ciała rudnego złoża Lubin-Sieroszowice. Biuletyn PIG, vol. 423, pp. 77-94
    • Małopolskie
      • Kraków
    		Piestrzyński A., Skamra J., Marszałek M. 1999: Sulphide mineralization in diabases from Niedźwiedzia Góra near Cracow. Mineralogia Polonica, vol. 30, no. 2, 81-85
    • Podlaskie
      • Suwałki District
    		Nejbert K. 2008: Mineralogy of sulphides in mafic rocks of the Suwałki Anorthosite Massif, NE Poland. Mineralogia - Special Papers, vol. 32, p. 116
    Kucha H. 1982: Haycockite and mooihoekite from titanomagnetite ore, Krzemianka, Poland. Mineralogia Polonica, vol. 13, no 2, 27-32.
    South Africa
     
    • Mpumalanga Province
      • Eastern Bushveld Complex
        • Lydenburg District
    		CABRI, L.J. & HALL, S.R. (1972): Mooihoekite and haycockite, two new copper-iron sulfides and their relationship to chalcopyrite and talnakhite. American Mineralogist 57, 689-708. ROWLAND, J.F. & HALL, S.R. (1973): The crystal structure of haycockite, Cu4Fe5S8. American Mineralogist, 58, 1110 abstract????. ROWLAND, J.F. & HALL, S.R. (1975) Haycockite, Cu4Fe5S8: a superstructure in the chalcopyrite series. Acta crystallographica B31, 2105-2112.
    • North West Province
      • Western Bushveld Complex
        • Rustenburg District
          • Rustenburg Mine
    		Economic Geology (1990) 85:537-555
    USA
     
    • Minnesota
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
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