Answer:
Hardness of a mineral is defined as the resistance to breaking, and density is defined as the mass of a substance per unit volume.
The density and hardness of a mineral, that is formed from through metamorphism are relatively much harder because the metamorphic minerals are formed under extremely high temperature and pressure conditions. These are high-grade minerals.
On the other hand, the density and hardness of a mineral formed through evaporation are much weaker in nature, because these minerals are formed when the water is eliminated due to the high rate of evaporation.
So, it can be concluded that the density and hardness of as mineral formed through the metamorphic process is highly stronger and harder than those that are formed through evaporation.
