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Ullmannite

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Formula:
NiSbS
Colour:
Tin-white, steel grey
Lustre:
Metallic
Hardness:
5 - 5½
Specific Gravity:
6.65
Crystal System:
Isometric
Member of:
Name:
Named after Johann Christoph Ullmann (3 September 1771, Kassel - 6 August 1821, Marburg), German mineralogist and chemist.

Classification of Ullmannite

Approved, 'Grandfathered' (first described prior to 1959)
2.EB.25

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.
2.12.3.3

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.11.38

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

Physical Properties of Ullmannite

Metallic
Transparency:
Opaque
Colour:
Tin-white, steel grey
Streak:
Black, grayish black
Hardness:
5 - 5½ on Mohs scale
Hardness:
VHN100=592 - 627 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {001}
Fracture:
Irregular/Uneven
Density:
6.65 g/cm3 (Measured)    6.793 g/cm3 (Calculated)

Optical Data of Ullmannite

Type:
Isotropic
Type:
Anisotropic
Anisotropism:
Occasionally weakly anisotropic
Colour in reflected light:
White

Chemical Properties of Ullmannite

Formula:
NiSbS
Common Impurities:
Fe,Co,As,Bi

Crystallography of Ullmannite

Crystal System:
Isometric
Class (H-M):
2 3 - Tetartoidal
Space Group:
P21 3
Cell Parameters:
a = 5.91(2) Å
Unit Cell V:
206.43 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Cubes
Comment:
Arsenian ullmannite has space group P1.

Crystallographic forms of Ullmannite

Crystal Atlas:
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Ullmannite - Multiple twin on [110], contact plane {001}
3d models and HTML5 code kindly provided by www.smorf.nl.

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Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation

X-Ray Powder Diffraction

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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Type Occurrence of Ullmannite

Synonyms of Ullmannite

Other Language Names for Ullmannite

Relationship of Ullmannite to other Species

Member of:
Other Members of this group:
ChangchengiteIrBiS
CobaltiteCoAsS
GersdorffiteNiAsS
Hollingworthite(Rh,Pt,Pd)AsS
Irarsite(Ir,Ru,Rh,Pt)AsS
JolliffeiteNiAsSe
KalungaitePdAsSe
MaslovitePtBiTe
MayingiteIrBiTe
MicheneritePdBiTe
MilotaitePdSbSe
PadmaitePdBiSe
PlatarsitePtAsS
TestibiopalladitePdTe(Sb,Te)
TolovkiteIrSbS
Willyamite(Co,Ni)SbS
Forms a series with:

Common Associates

Associated Minerals Based on Photo Data:
Breithauptite9 photos of Ullmannite associated with Breithauptite on mindat.org.
Bottinoite8 photos of Ullmannite associated with Bottinoite on mindat.org.
Siderite4 photos of Ullmannite associated with Siderite on mindat.org.
Dolomite3 photos of Ullmannite associated with Dolomite on mindat.org.
Tetrahedrite2 photos of Ullmannite associated with Tetrahedrite on mindat.org.
Quartz2 photos of Ullmannite associated with Quartz on mindat.org.
Galena2 photos of Ullmannite associated with Galena on mindat.org.
Calcite2 photos of Ullmannite associated with Calcite on mindat.org.
Chalcopyrite1 photo of Ullmannite associated with Chalcopyrite on mindat.org.
Sulphur1 photo of Ullmannite associated with Sulphur on mindat.org.

Related Minerals - Nickel-Strunz Grouping

2.EB.05aAurostibiteAuSb2
2.EB.05bBambollaiteCu(Se,Te)2
2.EB.05aCattieriteCoS2
2.EB.05aErlichmaniteOsS2
2.EB.05aFukuchiliteCu3FeS8
2.EB.05aGeversitePtSb2
2.EB.05aHaueriteMnS2
2.EB.05aInsizwaitePt(Bi,Sb)2
2.EB.05aKrut'aiteCuSe2
2.EB.05aLauriteRuS2
2.EB.05aPenroseite(Ni,Co,Cu)Se2
2.EB.05aPyriteFeS2
2.EB.05aSperrylitePtAs2
2.EB.05aTrogtaliteCoSe2
2.EB.05aVaesiteNiS2
2.EB.05aVillamaninite(Cu,Ni,Co,Fe)S2
2.EB.05aDzharkeniteFeSe2
2.EB.05aGaotaiiteIr3Te8
2.EB.10bAlloclasiteCo1-xFexAsS
2.EB.10dCostibiteCoSbS
2.EB.10aFerroseliteFeSe2
2.EB.10aFrohbergiteFeTe2
2.EB.10cGlaucodot(Co0.50Fe0.50)AsS
2.EB.10aKulleruditeNiSe2
2.EB.10aMarcasiteFeS2
2.EB.10aMattagamiteCoTe2
2.EB.10eParacostibiteCoSbS
2.EB.10ePararammelsbergiteNiAs2
2.EB.10fOeniteCoSbAs
2.EB.15aAnduoite(Ru,Os)As2
2.EB.15aClinosaffloriteCoAs2
2.EB.15aLöllingiteFeAs2
2.EB.15aNisbiteNiSb2
2.EB.15aOmeiite(Os,Ru)As2
2.EB.15cPaxiteCuAs2
2.EB.15aRammelsbergiteNiAs2
2.EB.15aSafflorite(Co,Ni,Fe)As2
2.EB.15bSeinäjokite(Fe,Ni)(Sb,As)2
2.EB.20ArsenopyriteFeAsS
2.EB.20GudmunditeFeSbS
2.EB.20Osarsite(Os,Ru)AsS
2.EB.20Ruarsite(Ru,Os)AsS
2.EB.25CobaltiteCoAsS
2.EB.25GersdorffiteNiAsS
2.EB.25Hollingworthite(Rh,Pt,Pd)AsS
2.EB.25Irarsite(Ir,Ru,Rh,Pt)AsS
2.EB.25JolliffeiteNiAsSe
2.EB.25KrutoviteNiAs2
2.EB.25MaslovitePtBiTe
2.EB.25MicheneritePdBiTe
2.EB.25PadmaitePdBiSe
2.EB.25PlatarsitePtAsS
2.EB.25TestibiopalladitePdTe(Sb,Te)
2.EB.25TolovkiteIrSbS
2.EB.25Willyamite(Co,Ni)SbS
2.EB.25ChangchengiteIrBiS
2.EB.25MayingiteIrBiTe
2.EB.25Hollingsworthite(Rh,Pt,Pd)AsS
2.EB.25KalungaitePdAsSe
2.EB.25MilotaitePdSbSe
2.EB.30UrvantsevitePd(Bi,Pb)2
2.EB.35RheniiteReS2

Related Minerals - Hey's Chemical Index of Minerals Grouping

3.11.1HeazlewooditeNi3S2
3.11.2Godlevskite(Ni,Fe)9S8
3.11.3MilleriteNiS
3.11.4PolydymiteNi2+Ni3+2S4
3.11.5VaesiteNiS2
3.11.6ShanditeNi3Pb2S2
3.11.7DonharrisiteNi3HgS3
3.11.8ViolariteFe2+Ni3+2S4
3.11.9Pentlandite(Fe,Ni)9S8
3.11.10Bravoite(Fe,Ni)S2
3.11.11SiegeniteCoNi2S4
3.11.12FletcheriteCu(Ni,Co)2S4
3.11.13Villamaninite(Cu,Ni,Co,Fe)S2
3.11.14Mäkineniteγ-NiSe
3.11.15Sederholmitebeta-NiSe
3.11.16TrüstedtiteNi3Se4
3.11.17WilkmaniteNi3Se4
3.11.18KulleruditeNiSe2
3.11.19Penroseite(Ni,Co,Cu)Se2
3.11.20TyrrelliteCu(Co3+,Ni3+)2Se4
3.11.21ImgreiteNiTe (?)
3.11.22MeloniteNiTe2
3.11.23KitkaiteNiTeSe
3.11.24Dienerite
3.11.25OrceliteNi5-xAs2, x ~ 0.25
3.11.26MaucheriteNi11As8
3.11.27NickelineNiAs
3.11.28RammelsbergiteNiAs2
3.11.29PararammelsbergiteNiAs2
3.11.30Nickelskutterudite(Ni,Co,Fe)As3
3.11.31OregoniteNi2FeAs2
3.11.32Westerveldite(Fe,Ni,Co)As
3.11.33Langisite(Co,Ni)As
3.11.34GersdorffiteNiAsS
3.11.35JolliffeiteNiAsSe
3.11.36BreithauptiteNiSb
3.11.39Willyamite(Co,Ni)SbS

Related Minerals - Dana Grouping (8th Ed.)

2.12.3.1CobaltiteCoAsS
2.12.3.2GersdorffiteNiAsS
2.12.3.4Willyamite(Co,Ni)SbS
2.12.3.5TolovkiteIrSbS
2.12.3.6PlatarsitePtAsS
2.12.3.7Irarsite(Ir,Ru,Rh,Pt)AsS
2.12.3.8Hollingworthite(Rh,Pt,Pd)AsS
2.12.3.9JolliffeiteNiAsSe
2.12.3.10PadmaitePdBiSe
2.12.3.11MicheneritePdBiTe
2.12.3.12MaslovitePtBiTe
2.12.3.13TestibiopalladitePdTe(Sb,Te)

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 Ullmannite

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Miers (1891) Mineralogical Magazine: 9: 211.
Mieleitner (1921) Zeitschrift für Kristallographie: 56: 105.
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: 301-302.
Takeuchi, Y. (1957) The absolute structure of ullmannite, NiSbS. Mineral. J. (Sapporo) 2, 90-102.
American Mineralogist (1977) 62: 369.
American Mineralogist (1980) 65: 154-156.
Canadian Mineralogist (1986) 24: 27-33.
Mineralogical Journal: 2: 90-102.
Reddy, S. N.; Ravikumar, R. V. S. S. N.; Reddy, B. J.; Reddy, Y. P. (2000) Chemical and electronic spectral studies of ullmannite (Ni4Sb4S4). Indian Journal of Engineering & Materials Sciences 7, 459-460.

Internet Links for Ullmannite

mindat.org URL:
https://www.mindat.org/min-4086.html
Please feel free to link to this page.
Specimens:
The following Ullmannite specimens are currently listed for sale on minfind.com.

Localities for Ullmannite

Mineral and/or Locality  
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