thumbnail

Platinum-group element geochemistry of zoned ultramafic intrusive suites, Klamath Mountains, California and Oregon.

Economic Geology
By: , and 

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS | Dublin Core

Abstract

Analyses for platinum-group elements of the varied rock suites of three Alaskan-type ultramafic to mafic multi-intrusive bodies are reported. Ir and Ru are less than analytical sensitivities of 100 and 20 ppb; Rh is less than or near 1 ppb. Average Pd assays vary among the rocks within intrusive complexes and between the three complexes (6.3, 13.7, 36.4 ppb); average Pt assays vary little among the same samples (27.9, 60.9, 34.0 ppb). Statistically adjusted Pt/(Pt + Pd) ratios increase in each suite from gabbro through clinopyroxenite to olivine-rich rocks, possibly owing to Pd fractionation.-G.J.N.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Platinum-group element geochemistry of zoned ultramafic intrusive suites, Klamath Mountains, California and Oregon.
Series title Economic Geology
Volume 81
Issue 5
Year Published 1986
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Economic Geology
First page 1252
Last page 1260