Abstract
New noble metal analyses are presented for five Ni-Cu deposits in Norway and are considered along with published data from a further four deposits. By far the richest deposits are: Fæøy averaging 1790 ppb Pt and 4760 ppb Pd, and Lillefiellklumpen averaging 1800 ppb Pt and 3070 ppb Pd. Both are small massive sulphide bodies, the former associated with late stage dykes within the Karmøy ophiolite while the latter is associated with MORB-type tholeiites within the Gjersvik island arc complex. The Vakkerlien and Espedalen deposits contain respectively 1380 and 1000 ppb (PGE + Au) in 100% sulphides. Other deposits have low contents of PGE (< 300ppb in 100% sulphides) but several are locally enriched in Au, particularly Ertelien, in which Cu-rich samples average 1430 ppb Au. Data from the Norwegian deposits and from elsewhere indicate that Ni-Cu deposits in intrusions in orogenic belts tend to have low noble metal contents.
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Boyd, R., Barnes, SJ., Grønlie, A. (1988). Noble Metal Geochemistry of some Ni-Cu Deposits in the Sveconorwegian and Caledonian Orogens in Norway. In: Prichard, H.M., Potts, P.J., Bowles, J.F.W., Cribb, S.J. (eds) Geo-Platinum 87. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1353-0_13
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