Metamorphic rocks are sedimentary or igneous rocks which were transformed by pressure, warmth, or maybe the intrusion of fluids. • Prograde metamorphic activities usually are of much longer length than retrograde occasions, providing minerals additional time to realize equilibrium. Variants in hardness make minerals valuable for various needs. The softness https://pr7bookmark.com/story13250927/the-best-side-of-difference-between-rocks-and-minerals