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Osthammeren, Feragen, Røros, Sør-Trøndelag, Norway

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Podiform chromite deposit with PGE mineralization, hosted by a small ultramafic (serpentinite) body of the Feragen complex. ALL PGE phases are found as microscopic grains.



References:
- Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263
- Nilsson, L. P. & Larsen, R. B. (1998): Edle mineraler i mafiske og ultramafiske bergarter- en oppsummering av platina-gruppe mineraler (PGM) funnet i Norge i de senere år. Norsk Bergverksmuseum Skrift 14: 40-49
- Grenne, T., Ihlen, P.M., and Vokes, F.M. (1999): Scandinavian Caledonide Metallogeny in a plate tectonic perspective. Mineralium Deposita 34, 422-471.





Mineral List:
  		•  Erlichmanite
    OsS
     
    2
    Description: Also an Ir-rich erlichmanite has been identified (Nilsson 1990)
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Heazlewoodite
    Ni
     
    3
    		S
     
    2
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Hollingworthite
    (Rh,Pt,Pd)AsS
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Irarsite
    (Ir,Ru,Rh,Pt)AsS
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Iridium
    var: Osmiridium
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Laurite
    RuS
     
    2
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Nickeline
    NiAs
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Osarsite
    (Os,Ru)AsS
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Osmium
    (Os,Ir,Ru)
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Osmium
    var: Iridosmine
    (Os,Ir)
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Pentlandite
    (Fe,Ni)
     
    9
    		S
     
    8
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Platarsite
    (Pt,Rh,Ru)AsS
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  'Serpentine Group'
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Sperrylite
    PtAs
     
    2
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Stibiopalladinite
    Pd
     
    5
    		Sb
     
    2
    Reference: [Nilson, L. P. (1990): Platinum-group mineral inclusions in chromitite from the Osthammeren ultramafic tectonite body, South Central Norway. Mineralogy and Petrology 42: 249-263]
  		•  Tolovkite
    IrSbS
    Reference: [Nilsson, L. P. & Larsen, R. B. (1998): Edle mineraler i mafiske og ultramafiske bergarter- en oppsummering av platina-gruppe mineraler (PGM) funnet i Norge i de senere år. Norsk Bergverksmuseum Skrift 14: 40-49]


    16 entries listed. 13 valid minerals.

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