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Westerveldite

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Big Photo

Tunugdliarfik Firth (Eriksfjord), Ilimaussaq complex, Narsaq, Kitaa (West Greenland) Province, Greenland
© Knut Eldjarn

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Formula:
(Fe,Ni,Co)As
System:OrthorhombicColour:brownish grey, dark gray
Hardness:5½ - 6
Name:Named after Jan Westerveld (1905-1962), mineralogist and economic geologist, University of Amsterdam, The Netherlands
This page provides mineralogical data about Westerveldite.

Classification of Westerveldite

IMA status:Approved 1971
Strunz 8th edition ID:2/C.19-30
Nickel-Strunz 10th (pending) edition ID:2.CC.15

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
C : With Ni, Fe, Co, PGE, etc.
Hey's CIM Ref.:3.11.32

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 Westerveldite

Type Locality:La Gallega Mine, Ojén Iherzolite massif, Ojén, Málaga, Andalusia, Spain
Year of Discovery:1971

Physical Properties of Westerveldite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:brownish grey, dark gray
Hardness (Mohs):5½ - 6
Hardness (Vickers):VHN100=916 - 973 kg/mm2 (15 s test time)

Crystallography of Westerveldite

Crystal System:Orthorhombic
Cell Parameters:a = 5.43Å, b = 6.02Å, c = 3.37Å
Ratio:a:b:c = 0.902 : 1 : 0.56
Unit Cell Volume:V 110.16 ų (Calculated from Unit Cell)

Optical Data of Westerveldite

Type:Anisotropic
Anisotropism:distinct in air strong in oil
Bireflectance:weak in air and oil
Reflectivity:
546 nnnmR=48.3%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 48.3%.
Colour in reflected light:whitish grey with faint brownish and bluish tinges

Chemical Properties of Westerveldite

Formula:
(Fe,Ni,Co)As
Essential elements:As, Fe
All elements listed in formula:As, Co, Fe, Ni
Common Impurities:Sb,Co

Relationship of Westerveldite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.CC.UM2007-26-S:CuFeIrNiPtRh
(Ir,Cu,Ni,Pt,Rh,Fe)
 
9
S
 
11
2.CC.05Achavalite
(Fe,Cu)Se
2.CC.05Breithauptite
NiSb
2.CC.05Freboldite
CoSe
2.CC.05Kotulskite
Pd(Te,Bi)
 
1-2
2.CC.05Langisite
(Co,Ni)As
2.CC.05Nickeline
NiAs
2.CC.05Sederholmite
beta-NiSe
2.CC.05Sobolevskite
PdBi
2.CC.05Stumpflite
Pt(Sb,Bi)
2.CC.05Sudburyite
(Pd,Ni)Sb
2.CC.05Jaipurite
CoS
2.CC.05Zlatogorite
NiCuSb
 
2
2.CC.10Pyrrhotite
Fe
 
1-x
S (x = 0 to 0.17)
2.CC.10Smythite
(Fe,Ni)
 
3+x
S
 
4
 (x=0-0.3)
2.CC.10Troilite
FeS
2.CC.15Cherepanovite
RhAs
2.CC.15Modderite
(Co,Fe)As
2.CC.15Ruthenarsenite
(Ru,Ni)As
2.CC.20Millerite
NiS
2.CC.20Mäkinenite
γ-NiSe
2.CC.20UM1990-38-S:CuFeIrNiPtRh
(Ir,Pt,Ni,Fe)S
2.CC.25Mackinawite
(Fe,Ni)
 
9
S
 
8
2.CC.30Hexatestibiopanickelite
(Pd,Ni)(Sb,Te)
2.CC.30Vavřínite
Ni
 
2
SbTe
 
2
2.CC.35aBraggite
(Pt,Pd,Ni)S
2.CC.35bCooperite
PtS
2.CC.35aVysotskite
(Pd,Ni)S
Related Minerals - Hey's Index Grouping:

- +
3.11.1Heazlewoodite
Ni
 
3
S
 
2
3.11.2Godlevskite
(Ni,Fe)
 
9
S
 
8
3.11.3Millerite
NiS
3.11.4Polydymite
Ni
2+
 
Ni
3+
2
S
 
4
3.11.5Vaesite
NiS
 
2
3.11.6Shandite
Ni
 
3
Pb
 
2
S
 
2
3.11.7Donharrisite
Ni
 
8
Hg
 
3
S
 
9
3.11.8Violarite
Fe
2+
 
Ni
3+
2
S
 
4
3.11.9Pentlandite
(Fe,Ni)
 
9
S
 
8
3.11.10Bravoite
(Fe,Ni)S
 
2
3.11.11Siegenite
CoNi
 
2
S
 
4
 -NiCo
 
2
S
 
4
3.11.12Fletcherite
Cu(Ni,Co)
 
2
S
 
4
3.11.13Villamaninite
(Cu,Ni,Co,Fe)S
 
2
3.11.14Mäkinenite
γ-NiSe
3.11.15Sederholmite
beta-NiSe
3.11.16Trüstedtite
Ni
 
3
Se
 
4
3.11.17Wilkmanite
Ni
 
3
Se
 
4
3.11.18Kullerudite
NiSe
 
2
3.11.19Penroseite
(Ni,Co,Cu)Se
 
2
3.11.20Tyrrellite
Cu(Co
3+
 
,Ni
3+
 
)
 
2
Se
 
4
3.11.21Imgreite
NiTe (?)
3.11.22Melonite
NiTe
 
2
3.11.23Kitkaite
NiTeSe
3.11.24Dienerite
3.11.25Orcelite
Ni
 
5-x
As
 
2
3.11.26Maucherite
Ni
 
11
As
 
8
3.11.27Nickeline
NiAs
3.11.28Rammelsbergite
NiAs
 
2
3.11.29Pararammelsbergite
NiAs
 
2
3.11.30Nickelskutterudite
NiAs
 
2-3
3.11.31Oregonite
Ni
 
2
FeAs
 
2
3.11.33Langisite
(Co,Ni)As
3.11.34Gersdorffite
NiAsS
3.11.35Jolliffeite
NiAsSe
3.11.36Breithauptite
NiSb
3.11.38Ullmannite
NiSbS
3.11.39Willyamite
(Co,Ni)SbS

Other Names for Westerveldite

Synonyms:
IMA1971-017
Other Languages:
German:Westerveldit
Russian:Вестервелдит
Spanish:Westerveldita
Varieties:
Antimonian Westerveldite

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 Westerveldite

Reference List:

- +
American Mineralogist (1972): 57: 354-363.

Neues Jahrbuch für Mineralogie, Abhandlungen (1977): 130: 214.

I. S. Oen, E. A. J. Burke and C. Kieft (1977) Westerveldite from Igdlúnguaq, Ilímaussaq Alkaline Massif, South Greenland. Mineralogical Magazine 41:77-83.

Picot -Johan (1982): 389.

Internet Links for Westerveldite

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  • Westerveldite details from Handbook of Mineralogy (PDF)
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    • Localities for Westerveldite

    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.
    Canada
     
    • Manitoba
      • Thompson Nickel Belt
        • Moab-Setting Lakes area
          • Thompson
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; I. S. Oen, E. A. J. Burke and C. Kieft (1977) Westerveldite from Igdlúnguaq, Ilímaussaq Alkaline Massif, South Greenland. Mineralogical Magazine 41:77-83.
    Finland
     
    • Western and Inner Finland Region
    		American Mineralogist (1977): 62: 1059-1060.
    Greenland
     
    • Kitaa (West Greenland) Province
      • Narsaq
    		Soerensen, H. (2001): The Ilimaussaq alkaline complex, South Greenland: status of mineralogical research with new results, Geology of Greenland Survey Bulletin 190, GEUS
    Knut Eldjarn collection
    I. S. Oen, E. A. J. Burke and C. Kieft (1977) Westerveldite from Igdlúnguaq, Ilímaussaq Alkaline Massif, South Greenland. Mineralogical Magazine 41:77-83.
    Italy
     
    • Umbria
      • Terni Province
        • San Venanzo
    		Stoppa, F., Sharygin, V.V., and Cundari, A. (1997): Mineralogy and Petrology 61, 27-45.; Stoppa, F., Sharygin, V.V. and Cundari, A. (1997) New mineral data from the kamafugite-carbonatite association: the melilitolite from Pian di Celle, Italy. Mineralogy and Petrology, 61, 27-45.
    Spain
     
    • Andalusia
      • Málaga
        • Carratraca
    		Econ Geol (1990) 85:112-132
    Econ Geol (1990) 85:112-132
        • Ojén
          • Ojén Iherzolite massif
    		Amer.Min.(1972) 57, 354-363; Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Econ Geol (1990) 85:112-132
    • Galicia
      • Pontevedra
        • A Cañiza
    		Martin-Izard, A., Paniagua, A., Moreiras, D. (1995) Metasomatism at a granitic pegmatite-dunite contact in Galicia: the Franqueira occurrence of chrysoberyl (alexandrite), emerald, and phenakite. Canadian Mineralogist, 33, 775-792.
    Sweden
     
    • Södermanland
      • Nyköping
        • Tunaberg
    		NJMAh (1994) 166 (3), 261-294
    USA
     
    • New Hampshire
      • Merrimack Co.
    		Am Min 88:1844–1852, (2003)
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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