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Ullmannite

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Formula:
NiSbS
System:
Isometric
Colour:
Tin-white, steel grey
Hardness:
5 - 5½
Member of:
Name:
Named after Johann Christoph Ullmann (1771-1821), 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
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Type Occurrence of Ullmannite

Physical Properties of Ullmannite

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

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 Volume:
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.

Toggle
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:
Image Loading

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

Optical Data of Ullmannite

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

Chemical Properties of Ullmannite

Formula:
NiSbS
All elements listed in formula:
Common Impurities:
Fe,Co,As,Bi

Relationship of Ullmannite to other Species

Series:
Forms a series with Willyamite (see here)
Member of:
Other Members of 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
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
2.EB.25KalungaitePdAsSe
2.EB.25MilotaitePdSbSe
2.EB.30UrvantsevitePd(Bi,Pb)2
2.EB.35RheniiteReS2
3.11.1HeazlewooditeNi3S2
3.11.2Godlevskite(Ni,Fe)9S8
3.11.3MilleriteNiS
3.11.4PolydymiteNi2+Ni23+S4
3.11.5VaesiteNiS2
3.11.6ShanditeNi3Pb2S2
3.11.7DonharrisiteNi3HgS3
3.11.8ViolariteFe2+Ni23+S4
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
3.11.30NickelskutteruditeNiAs3-x
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

Other Names for Ullmannite

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:
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.

Internet Links for Ullmannite

Specimens:
The following Ullmannite specimens are currently listed for sale on minfind.com.

Localities for Ullmannite

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.
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