Which mineral is commonly found in the three metamorphic rocks slate, schist, and gneiss?
1 Answer
Nov 21, 2016
Quartz,
Explanation:
Coming from the protolith shale, these three metamorphic rocks are created through regional metamorphism. Quartz is the common mineral between them, but it's not visible in slate outside of microscopic tools. Schist and gneiss show off some pretty fascinating displays of quartz to the naked eye, though.
