Abstract
Electron microprobe analyses are presented for coexisting biotite, hornblende, ilmenite, magnetite, and plagioclase from metamorphic amphibolite gabbro, amphibolite, and gneiss. Among biotite and hornblende a regular partition of total Al was observed. The distribution of Mg/Fe is a function of the relative concentration of tetrahedral Al in the two minerals. The irregular distribution observed for most other elements is suggestive of disequilibrium conditions.
Full Text
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call