Diffusion-driven chromium isotope fractionation in ultramafic cumulate minerals: Elemental and isotopic evidence from the Stillwater Complex
Sign Up to like & getrecommendations! Published in 2019 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2019.07.052
Abstract: Abstract To investigate chromium diffusion kinetics in ultramafic cumulate minerals, we analyzed the Cr elemental and isotopic compositions of olivine, orthopyroxene, and chromite from the Stillwater layered intrusion. Core-to-rim compositional profiles reveal that Cr elemental… read more here.
Keywords: cumulate minerals; olivine orthopyroxene; ultramafic cumulate; elemental isotopic ... See more keywords
The Nature and Composition of the J-M Reef, Stillwater Complex, Montana, USA
Sign Up to like & getrecommendations! Published in 2020 at "Economic Geology"
DOI: 10.5382/econgeo.4777
Abstract: In this contribution, we analyze 30 years of mine development data and quantitatively identify the processes that control the grade and tenor of the mineralized rock. An assay database of more than 60,000 samples was… read more here.
Keywords: stillwater; stillwater complex; composition reef; reef ... See more keywords