by heat and pressure
Minerals can form deep inside the Earth's crust by crystallization of melted materials.
Silicate minerals such as quartz and feldspar are the most common minerals located in earths crust
Mining?
Silicon is a mixture of the minerals of the earths crust. so.... silicon isn't something from the earths crust. -thanks for your question.
mining ;)
because of the metamorphism when temperature and pressure inside earths crust change that were present in the rock when it formed
The sudden vibration in the plates inside the crust causes the earths crust to rise & fall.
Quartz and feldspars are the most common silicate minerals of the crust.
the oceanic plate
The crust.
Shaft mining or strip mining.
the answer to this question is literally earth's crust.