1.
Which mineral forms from complete metamorphism of clay-rich rocks and shows perfect basal cleavage but no visible crystals?
2.
What ultrafine-grained volcanic rock forms from instantaneous quenching, preventing any mineral crystals from forming?
3.
Which sedimentary rock forms from compacted silt-sized particles and often splits into thin sheets due to aligned grains?
4.
What metamorphic rock develops from basalt under medium-grade metamorphism and contains amphibole aligned into bands?
5.
Which rock cycle process alters minerals when hot fluids percolate through rock, changing chemistry without melting?
