Potential answers for "Crystalline, flaky rock"

⭐⭐⭐⭐ SCHIST
⭐⭐⭐ DISCOMUSIC
⭐⭐⭐ MICA
⭐⭐⭐ SPAR
⭐⭐⭐ DIORITE
⭐⭐⭐ GEODE

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