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Gersdorffite

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Johann Rudolf Ritter von Gersdorff (1781 - 1849)
Formula:
NiAsS
Colour:
Gray, grayish black, silver white, or tin white
Lustre:
Metallic
Hardness:
Specific Gravity:
5.9
Crystal System:
Isometric
Member of:
Name:
Named in 1845 by Alexander Löwe in honor of Johann Rudolf Ritter von Gersdorff [March 18, 1781, Bochnia, Galicia, Poland – April 30, 1849, Wien, Austria], mining expert and owner of the nickel mine at Schladming (ca. 1842).

Classification of Gersdorffite

Approved
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.
2.12.3.2

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.11.34

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 Gersdorffite

Metallic
Transparency:
Opaque
Colour:
Gray, grayish black, silver white, or tin white
Streak:
Grayish black
Hardness:
5½ on Mohs scale
Hardness:
VHN100=657 - 767 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {100}
Fracture:
Irregular/Uneven
Density:
5.9 g/cm3 (Measured)    5.966 g/cm3 (Calculated)

Optical Data of Gersdorffite

Type:
Isotropic
Colour in reflected light:
White

Chemical Properties of Gersdorffite

Formula:
NiAsS
Common Impurities:
Fe,Co,Sb,Cu

Crystallography of Gersdorffite

Crystal System:
Isometric
Class (H-M):
m3 (2/m 3) - Diploidal
Space Group:
Pa3
Setting:
Pa3
Cell Parameters:
a = 5.66(6) Å
Unit Cell V:
181.32 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Octahedral, cubes, some dodecahedral modifications, pyritohedral.

Crystallographic forms of Gersdorffite

Crystal Atlas:
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Gersdorffite no.7 - Goldschmidt (1913-1926)
Gersdorffite no.10 - Goldschmidt (1913-1926)
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

Type Occurrence of Gersdorffite

Synonyms of Gersdorffite

Other Language Names for Gersdorffite

Varieties of Gersdorffite

Cobaltoan Gersdorffite

Co variety of gersdorffite rich in Os, Ir, Ru and Rh upto 15 weight percent.

Relationship of Gersdorffite to other Species

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

Common Associates

Nickelskutterudite(Ni,Co,Fe)As3
SideriteFeCO3
Associated Minerals Based on Photo Data:
Calcite26 photos of Gersdorffite associated with Calcite on mindat.org.
Nickeline24 photos of Gersdorffite associated with Nickeline on mindat.org.
Quartz19 photos of Gersdorffite associated with Quartz on mindat.org.
Annabergite17 photos of Gersdorffite associated with Annabergite on mindat.org.
Chalcopyrite16 photos of Gersdorffite associated with Chalcopyrite on mindat.org.
Millerite10 photos of Gersdorffite associated with Millerite on mindat.org.
Dolomite9 photos of Gersdorffite associated with Dolomite on mindat.org.
Skutterudite7 photos of Gersdorffite associated with Skutterudite on mindat.org.
Pistomesite5 photos of Gersdorffite associated with Pistomesite on mindat.org.
Tetrahedrite4 photos of Gersdorffite associated with Tetrahedrite 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.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.25UllmanniteNiSbS
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
3.11.35JolliffeiteNiAsSe
3.11.36BreithauptiteNiSb
3.11.38UllmanniteNiSbS
3.11.39Willyamite(Co,Ni)SbS

Related Minerals - Dana Grouping (8th Ed.)

2.12.3.1CobaltiteCoAsS
2.12.3.3UllmanniteNiSbS
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 Gersdorffite

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ramsdell (1925) American Mineralogist 10, 281.
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: 298-300.
Bayliss, P., & Stephenson, N. C. (1967). The crystal structure of gersdorffite. Mineralogical Magazine and Journal of the Mineralogical Society, 36, 38-41. https://rruff-2.geo.arizona.edu/uploads/MM36_38.pdf
Bayliss, P. (1968). CRYSTAL STRUCTURE OF DISORDERED GERSDORFFITE. American Mineralogist, 53(1-2), 290.
Bayliss, P., & Stephenson, N. C. (1968). The Crystal Structure of Gersdorffite (III), a Distorted and Disordered Pyrite Structure. Mineralogical Magazine, 36(283), 940-947. http://www.minersoc.org/pages/Archive-MM/Volume_36/36-283-940.pdf
Bayliss, P. (1982). A further crystal structure refinement of gersdorffite. American Mineralogist, 67(9-10), 1058-1064. http://rruff.info/doclib/cm/vol34/CM34_503.pdf
Bayliss, P. (1969). X-ray data, optical anisotropism, and thermal stability of cobaltite, gersdorffite, and ullmannite. Mineralogical Magazine, 37(285), 26-33. http://www.minersoc.org/pages/Archive-MM/Volume_37/37-285-26.pdf
Béziat, D., Monchoux, P., & Tollon, F. R. A. N. C. I. S. (1996). Cobaltite-gersdorffite solid solution as a primary magmatic phase in spessartite, Lacaune area, Montagne Noire, France. The Canadian Mineralogist, 34(3), 503-512. http://rruff.info/doclib/cm/vol34/CM34_503.pdf
Peacock, M. A., & Henry, W. G. (1948). The crystal structure of cobaltite (CoAsS), gersdorffite (NiAsS), and ullmannite (NiSbS). University Toronto Studies Geology Series, 52, 7l-80.
Fanlo, I., Subías, I., Gervilla, F., & Manuel, J. (2006). Textures and compositional variability in gersdorffite from the Crescencia Ni–(Co–U) showing, Central Pyrenees, Spain: primary deposition or re-equilibration?. The Canadian Mineralogist, 44(6), 1513-1528. https://rruff-2.geo.arizona.edu/uploads/CM44_1513.pdf
Shannon, E. V. (1924). An occurrence of iron-cobalt bearing gersdorffite in Idaho. Journal of the Washington Academy of Sciences, 14(13), 275-277.
Doelter, C. (1926). Nickelglanzgruppe. In Handbuch der Mineralchemie (pp. 719-739). Springer Berlin Heidelberg.
Stillwell, F. L. (1935). An Occurrence of Gersdorffite in North-East Dundas, Tasmania. In Proceedings of the Australasian Institute of Mining and Metallurgy (No. 100, pp. 465-476).

Internet Links for Gersdorffite

mindat.org URL:
https://www.mindat.org/min-1683.html
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Specimens:
The following Gersdorffite specimens are currently listed for sale on minfind.com.

Localities for Gersdorffite

Mineral and/or Locality  
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