Abstract
Zinc has been determined in a suite of rocks and minerals from the Skaergaard intrusion, east Greenland, by atomic absorption spectrophotometry using a pre-concentration technique. Zinc is progressively enriched in the ultimate residual magmatic fractions. It remains low in the leucocratic rocks and occurs in greater concentrations in the melanocratic rocks. Magnetite shows the highest zinc content of the minerals analysed. The original parent basic magma contained 104 p.p.m. of zinc. Using previously published data on cadmium a broad comparison of the geochemistry of cadmium with that of zinc has been made. The values for zinc found by atomic absorption spectrophotometry in the standard rocks G-1 and W-1 were 47 p.p.m. and 85 p.p.m. respectively.
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