Nickel-copper mineralization at Talnotry, Newton Stewart, Scotland

Stanley, Chris J.; Symes, R. F.; Jones, G. C.

doi:10.1007/bf01161822

Cited by 6 publications

(20 citation statements)

References 32 publications

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“…Similar PGE-rich Ni-Cu sulphide mineralization also occurs within a small diorite intrusion at Talnotry in southwest Scotland but, unusually, the mineralization is associated with a significant Ni-and As-rich zone that is substantially enriched with respect to Pt, Pd and Au (e.g. Pt up to 49 ppm; Stanley et al, 1987). However, despite the high PGE values, no platinum group minerals (PGM) have previously been described from this locality.…”

Section: Introductionmentioning

confidence: 89%

“…A well-defined but irregular contact separates the pyrrhotite-rich mineralization from the overlying 1 m thick zone which is dominated by stringers and veins of niccolite and gersdorffite with subordinate chalcopyrite and pyrrhotite. Very elevated Ni (7.3 wt.%) and PGE (up to 49 ppm Pt) concentrations have been reported from within this zone (Stanley et al, 1987) but again, despite the elevated PGE concentrations, no discrete PGM were identified leading Stanley et al (1987) to suggest that the PGE were in solid solution within niccolite and gersdorffite. Quartz vein-hosted arsenopyrite mineralization was also trialled at two nearby localities in the Glen of the Bar and on the southern bank of the Palnure Burn (Fig.…”

Section: Geologymentioning

confidence: 94%

“…3). Within this zone Ni reaches 1.4 wt.% whilst Pt concentrations reach 1.8 ppm and total precious metal values exceed 2.8 ppm (Stanley et al, 1987). Cobaltian gersdorffite is slightly enriched in both Pt and Rh (0.3 wt.% and 0.9 wt.%, respectively) but no discrete PGM were identified (Stanley et al, 1987).…”

Section: Geologymentioning

confidence: 96%

“…Within this zone Ni reaches 1.4 wt.% whilst Pt concentrations reach 1.8 ppm and total precious metal values exceed 2.8 ppm (Stanley et al, 1987). Cobaltian gersdorffite is slightly enriched in both Pt and Rh (0.3 wt.% and 0.9 wt.%, respectively) but no discrete PGM were identified (Stanley et al, 1987). A well-defined but irregular contact separates the pyrrhotite-rich mineralization from the overlying 1 m thick zone which is dominated by stringers and veins of niccolite and gersdorffite with subordinate chalcopyrite and pyrrhotite.…”

Section: Geologymentioning

confidence: 97%

“…3. Schematic log through the mineralized interval largely based on unpublished work presented in Stanley et al (1987).…”

Section: Geologymentioning

confidence: 99%

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Platinum-group element mineralization in an As-rich magmatic sulphide system, Talnotry, southwest Scotland

et al. 2004

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Arsenic-rich magmatic sulphide mineralization is hosted by a diorite intrusion at Talnotry, southwest Scotland. A relatively abundant and diverse platinum-group mineral assemblage is present and is dominated by sperrylite, irarsite and electrum with subordinate merenskyite, michenerite and froodite. Early euhedral gersdorffite is enriched with respect to Rh, Ir and Pt and in some cases contains exsolved blebs of irarsite or euhedral grains of sperrylite. Sperrylite is also enclosed within silicates and sulphides indicating that it crystallized directly from an As-rich sulphide liquid. Pyrrhotite-chalcopyrite mineral assemblages are consistent with the fractional crystallization of monosulphide solid solution and are overlain by PGE-, Ni-and As-rich mineral assemblages indicative of crystallization from a NiAs liquid. Late-stage, cross-cutting, electrum-bearing chalcopyrite veins are consistent with the crystallization of Cu-and Au-rich intermediate solid solution. The chemistry, mineralogy and lithological relationships of the diorite suggest that it may be an appinite and as such is potentially analogous to the Au-rich lamprophyre dykes present within southwest Scotland.

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Section: Introductionmentioning

confidence: 89%

Section: Geologymentioning

confidence: 94%