As the temperature and/or pressure increases on a body of rock we say the rock undergoes prograde metamorphism or that the grade of metamorphism increases. Metamorphic grade is a general term for describing the relative temperature and pressure conditions under which metamorphic rocks form.
One of my favorite smoothie flavors: Acai. Rich in antioxidants, fiber, omega fatty acids and more - acai is a delicious Amazonian superfood that is known for its chocolate-y berry flavor and deep purple color. Today I will show you how to build your own acai bowl, or smoothie. Plus a few shopping and acai brand tips.
Mica, known to some as the invaluable mineral, is made up of aluminum silicate and alkalis with hydroxyl. Some forms of mica also contain lithium, iron, magnesium, and very rarely does mica contain manganese, vanadium, barium, and fluorine.