Ultrahigh-pressure (4.5--5.5 GPa) experimental research on pyroxene-garnet transition and its significance

摘要

Al-PYROXENE in nature may be regarded as garnet solid solution in Al-free pyroxene. The transition from Al-pyroxene to garnet + Al-poor pyroxen can be carried out under high-pressure conditions. Ultrahigh-pressure experiment on pyroxene-garnet transition was carried out in this work using natural specimens to explain the genesis of garnet peridotite.