large crystals in an igneous rock, much larger than the groundmass
2 of 6
essential minerals
those minerals used to classify igneous rocks. Other minerals that maybe present, but aren't used for classification, are accessory or secondary minerals
3 of 6
felsic minerals
light coloured and silica rich
4 of 6
magma
molten rock, which is beneath the Earth's surface
5 of 6
mafic minerals
dark coloured, silica poor + rich inf magnesium and iron
6 of 6
Other cards in this set
Card 2
Front
large crystals in an igneous rock, much larger than the groundmass
Back
phenocrysts
Card 3
Front
those minerals used to classify igneous rocks. Other minerals that maybe present, but aren't used for classification, are accessory or secondary minerals
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