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Maurice H. Haycock
Brass yellow
Specific Gravity:
4.33 (Calculated)
Crystal System:
Named in honor of Maurice Hall Haycock (1 September 1900, Wolfville, Nova Scotia, Canada - 23 December 1988, Ottawa, Ontario, Canada), mineralogist and former head of the Mineralogy Section, Department of Energy, Mines and Resources, Ottawa, Ontario. Haycock gave a brief description of the mineral, in an unpublished report, as a graduate student at Princeton in 1931.
Talnakhite group

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Classification of HaycockiteHide

Approval year:
First published:

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.

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

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

Pronounciation of HaycockiteHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of HaycockiteHide

Brass yellow
Does not easily tarnish
4½ on Mohs scale
VHN100=206 - 231 kg/mm2 - Vickers
4.33 g/cm3 (Calculated)

Optical Data of HaycockiteHide

Weak to moderate
Colour in reflected light:
Similar to chalcopyrite

Chemical Properties of HaycockiteHide

Common Impurities:

Crystallography of HaycockiteHide

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

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0009539HaycockiteRowland J F, Hall S R (1975) Haycockite, Cu4Fe5S8: a superstructure in the chalcopyrite series Acta Crystallographica B31 2105-21121975Lydenburg District, Transvaal, South Africa0293
CIF Raw Data - click here to close

Type Occurrence of HaycockiteHide

General Appearance of Type Material:
Massive, to 0.5 mm.
Place of Conservation of Type Material:
National Mineral Collection (10397), Ottawa, Ontario, Canada.
Royal Ontario Museum (M30992), Toronto, Ontario, Canada.
Princeton University, Princeton, N.J., USA.
Smithsonian Institution, Washington, D.C., USA.
Heidelberg University (No. 2313a), Tiffi
Geological Setting of Type Material:
Sulfide-poor hortonolite dunite
Cabri, L.J. and Hall, S.R. (1972) Mooihoekite and haycockite, two new copper-iron sulfides and their relationship to chalcopyrite and talnakhite. American Mineralogist: 57: 689-708.

Synonyms of HaycockiteHide

Other Language Names for HaycockiteHide

Relationship of Haycockite to other SpeciesHide

Other Members of this group:
TalnakhiteCu9(Fe,Ni)8S16Iso. 4 3m : I4 3m

Related Minerals - Nickel-Strunz GroupingHide

2.CB.05aColoradoiteHgTeIso. m3m (4/m 3 2/m)
2.CB.05aHawleyiteCdSIso. 4 3m : F4 3m
2.CB.05aMetacinnabarHgSIso. 4 3m : F4 3m
2.CB.05aSphaleriteZnSIso. 4 3m : F4 3m
2.CB.05aStilleiteZnSeIso. 4 3m : F4 3m
2.CB.05aTiemanniteHgSeIso. 4 3m : F4 3m
2.CB.05aRudashevskyite(Fe,Zn)SIso. 4 3m : F4 3m
2.CB.10aChalcopyriteCuFeS2Tet. 4 2m : I4 2d
2.CB.10aGalliteCuGaS2Tet. 4 2m : I4 2d
2.CB.10aLenaiteAgFeS2Tet. 4 2m : I4 2d
2.CB.10aRoquesiteCuInS2Tet. 4 2m : I4 2d
2.CB.10bTalnakhiteCu9(Fe,Ni)8S16Iso. 4 3m : I4 3m
2.CB.10aLaforêtiteAgInS2Tet. 4 2m : I4 2d
2.CB.15aČernýiteCu2(Cd,Zn,Fe)SnS4Tet. 4 2m : I4 2m
2.CB.15aFerrokësteriteCu2FeSnS4Tet. 4 : I4
2.CB.15aHocartiteAg2(Fe2+,Zn)SnS4Tet. 4 2m : I4 2m
2.CB.15aKësterite Cu2ZnSnS4Tet. 4 : I4
2.CB.15aPirquitasiteAg2ZnSnS4Tet. 4 : I4
2.CB.15aStanniteCu2FeSnS4Tet. 4 2m : I4 2m
2.CB.15cUM2006-11-S:CuFeGeZnCu8(Fe,Zn)3Ge2S12 (?)
2.CB.20ChatkaliteCu6FeSn2S8Tet. 4 2m : P4m2
2.CB.20MawsoniteCu6Fe2SnS8Tet. 4 2m : P4m2
2.CB.30ColusiteCu13VAs3S16Iso. 4 3m : P4 3n
2.CB.30GermaniteCu13Fe2Ge2S16Iso. 4 3m : P4 3n
2.CB.30GermanocolusiteCu26V2(Ge,As)6S32Iso. 4 3m : P4 3m
2.CB.30StibiocolusiteCu13V(Sb,Sn,As)3S16Iso. 4 3m : P4 3m
2.CB.30Ovamboite Cu20(Fe,Cu,Zn)6W2Ge6S32Iso.
2.CB.30MaikainiteCu20(Fe,Cu)6Mo2Ge6S32Iso. m3m (4/m 3 2/m)
2.CB.35aKiddcreekiteCu6SnWS8Iso. 4 3m : F4 3m
2.CB.35aRenierite(Cu1+,Zn)11Fe4(Ge4+,As5+)2S16Tet. 4 2m : P4 2c
2.CB.35bCatamarcaiteCu6GeWS8Hex. 6mm : P63mc
2.CB.40LautiteCuAsSOrth. mmm (2/m 2/m 2/m) : Pnma
2.CB.45CadmoseliteCdSeHex. 6mm : P63mc
2.CB.45GreenockiteCdSHex. 6mm : P63mc
2.CB.45Wurtzite(Zn,Fe)SHex. 6mm : P63mc
2.CB.45RambergiteMnSHex. 6mm : P63mc
2.CB.45Buseckite(Fe,Zn,Mn)SHex. 6mm : P63mc
2.CB.55aCubaniteCuFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.55bIsocubaniteCuFe2S3Iso. m3m (4/m 3 2/m) : Fm3m
2.CB.60PicotpauliteTlFe2S3Orth. mmm (2/m 2/m 2/m) : Cmcm
2.CB.65ArgentopyriteAgFe2S3Mon. 2/m
2.CB.65SternbergiteAgFe2S3Orth. mmm (2/m 2/m 2/m)
2.CB.70SulvaniteCu3VS4Iso. 4 3m : P4 3m
2.CB.80EmpressiteAgTeOrth. mmm (2/m 2/m 2/m)
2.CB.85MuthmanniteAuAgTe2Mon. 2/m : P2/m

Related Minerals - Dana Grouping (8th Ed.)Hide,Ni)8S16Iso. 4 3m : I4 3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.1.1ChalcociteCu2SMon. 2/m : P21/b
3.1.2DjurleiteCu31S16Mon. 2/m
3.1.3DigeniteCu9S5Trig. 3m (3 2/m) : R3m
3.1.4AniliteCu7S4Orth. mmm (2/m 2/m 2/m) : Pnma
3.1.5RoxbyiteCu9S5Tric. 1 : P1
3.1.7GeeriteCu8S5Trig. 3
3.1.8CovelliteCuSHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.1.9BerzelianiteCu2SeIso. m3m (4/m 3 2/m) : Fm3m
3.1.10BellidoiteCu2SeTet. 4/m : P42/n
3.1.14KlockmanniteCuSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.1.15Krut'aiteCuSe2Iso. m3 (2/m 3) : Pa3
3.1.20LautiteCuAsSOrth. mmm (2/m 2/m 2/m) : Pnma
3.1.21MgriiteCu3AsSe3Iso. m3m (4/m 3 2/m)
3.1.22CubaniteCuFe2S3Orth. mmm (2/m 2/m 2/m)
3.1.23BorniteCu5FeS4Orth. mmm (2/m 2/m 2/m) : Pbca
3.1.24FukuchiliteCu3FeS8Iso. m3 (2/m 3) : Pa3
3.1.25ChalcopyriteCuFeS2Tet. 4 2m : I4 2d
3.1.28IsocubaniteCuFe2S3Iso. m3m (4/m 3 2/m) : Fm3m
3.1.30NukundamiteCu3.33Fe0.66S4Trig. 3m (3 2/m) : P3m1
3.1.32Orickite2CuFeS2 · H2OHex.
3.1.35TalnakhiteCu9(Fe,Ni)8S16Iso. 4 3m : I4 3m

Other InformationHide

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 HaycockiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cabri, L.J. and 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. and Hall, S.R. (1973) The crystal structure of haycockite, Cu4Fe5S8. American Mineralogist: 58: 1110 abstract????.
Rowland, J.F. and 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, Council For Geoscience, Geological Survey of South Africa, Handbook 15: 114 pages.
Korzun, B.V., 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. []

Internet Links for HaycockiteHide

Localities for HaycockiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Atlantic Ocean
  • Mid-Atlantic Ridge complex
Econ Geol (1976) 71:1515-1525
  • Nicosia District
    • Apliki
Antivachis, D.N. (2015) The geology of the northern part of the apliki Cyprus-type ore deposit. Bulletin of the Geological Society of Greece, vol. XLIX, 4 - 28.
  • Rajasthan
    • Jaipur district
      • Sikar District
        • Khetri
Ahmed, M., Shaif, M., Siddiquie, F. N., & Khan, R. (2018). Mode of Occurrence and Mineralogy of Northern Khetri Copper Deposits, Jhunjhunu District, Rajasthan. Natural Resources, 2018, 9, 389-403
  • Shizuoka Prefecture
Onuki et al (1981) Ganseki-Koubutsu-Koshogaku Zasshi, 76, 372-375.
  • Sonora
    • Moctezuma Municipality
Lapis 2001(1), 11-40
  • Lesser Poland Voivodeship
    • Kraków County
      • Gmina Krzeszowice
Piestrzyński A., Skamra J., Marszałek M. 1999: Sulphide mineralization in diabases from Niedźwiedzia Góra near Cracow. Mineralogia Polonica, vol. 30, no. 2, 81-85
  • Lower Silesian Voivodeship
Piestrzyński, A., & Pieczonka, J. (2012). Low temperature ore minerals associations in the Kupferschiefer type deposit, Lubin–Sieroszowice mining district, SW Poland. Мінералогічний збірник, (2), 59-66.
    • Lubin County
Kucha H. 2007: Mineralogia kruszcowa i geochemia ciała rudnego złoża Lubin-Sieroszowice. Biuletyn PIG, vol. 423, pp. 77-94
  • Podlaskie Voivodeship
    • Suwałki County
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.
  • Krasnoyarsk Krai
    • Taymyrsky Dolgano-Nenetsky District
      • Kureika river
        • Dzheltul'skii massif (Dzhaltul)
Shvedov, G. I., & Barkov, A. Y. (2015). Oulankaite, a Pd-rich stannosulphotelluride, and associated platinum-group minerals from the Dzhaltul microgabbroic intrusion, Krasnoyarskiy kray, Russia. Neues Jahrbuch für Mineralogie-Abhandlungen: Journal of Mineralogy and Geochemistry, 192(3), 229-237.
  • Republic of Karelia
Grokhovskaya, T. L., Lapina, M. I., Ganin, V. A., & Grinevich, N. G. (2005). PGE mineralization in the Burakovsk Layered Complex, Southern Karelia, Russia. Geology of Ore Deposits C/C of Geologiia Rudnykh Mestorozhdenii, 47(4), 283.
South Africa (TL)
  • Limpopo
    • Sekhukhune District
      • Burgersfort
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, Council For Geoscience, Geological Survey of South Africa, Handbook 15.
  • North West
    • Bojanala Platinum District Municipality
      • Rustenburg
        • Rustenburg Town & Townlands Mine
Economic Geology (1990) 85:537-555
  • Minnesota
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    • St. Louis Co.
      • Ely-Hoyt Lakes Area
Good, D., Borysenko, J., McBride, J., Walford, P., Smyk, M., Hollings, P., ... & Corkery, J. (2010) Cu-Ni-PGE Deposits in Mafic Intrusions of the Lake Superior Region June 24-30, 2010. 11th International Platinum Symposium
Mineral and/or Locality  
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