Each metamorphic facies is defined by a characteristic diagnostic mineral assemblage that forms under its specific pressure-temperature conditions: greenschist facies (chlorite+albite+epidote+actinolite), blueschist facies (glaucophane+lawsonite+albite), amphibolite facies (hornblende+plagioclase), and granulite facies (orthopyroxene+clinopyroxene+plagioclase).
Matching each facies to its diagnostic assemblage: Green schist - chlorite+albite+epidote+actinolite (A-R); Blue schist - glaucophane+lawsonites+albite (B-P); Amphibolite - hornblende+plagioclase (C-Q); Granulite - orthopyroxene+clinopyroxene+plagioclase (D-S)....
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