Premium
THE DEFINITION OF A HOWARDITE
Author(s) -
Mason Brian
Publication year - 1983
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1983.tb00825.x
Subject(s) - achondrite , basalt , plagioclase , geochemistry , geology , pyroxene , computer science , meteorite , olivine , physics , astrobiology , chondrite , paleontology , quartz
Delaney et al. (1983) propose to redefine howardites as basaltic achondrites containing more than 10% of magnesian orthopyroxenite (diogenite) component. Since the 10% requirement is arbitrary and of no genetic significance this redefinition should be rejected and the earlier definition of Score et al. (1982) “Howardites are polymict pyroxene‐plagioclase achondrites containing magnesian orthopyroxene” — in any amount — should be retained.