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Mak the page "Plagioclase" on this wiki! See the rake ootcome fand as weel.
porphyritic. The mineral assemblage is uisually quartz, alkali feldspar an plagioclase (in a ratio > 1:2—see the QAPF diagram). Biotite an hornblende are common... |
aboot three-quarters o the magma ocean haed creestallised, lawer-density plagioclase meenerals coud form an fleet intae a crust atap. The feenal liquids tae... |