The answer is actually not Quartz the answer is plagioclase feldspar your welcome.
The crust is formed of basalt rocks that are dark in color and are rich in minerals and substances like silicon and magnesium is oceanic while the crust is formed of light-colored granite rocks that have full of substances like oxygen and silicon is continental. Plagioclase feldspar is frequently found in granitic continental crust and basaltic oceanic crust.
Plagioclase is a tectosilicate mineral that comes in the feldspar group.
It is usually white, or gray which is translucent.
It is a mineral which is most frequently found in both granitic continental crust and basaltic oceanic crust.
Thus, the answer is Plagioclase feldspar.
For more details regarding Plagioclase feldspar, visit:
https://brainly.com/question/14575691
#SPJ2
