What small, intrusive igneous rock bodies often contain gem- quality crystals of minerals such as beryl and tourmaline and high concentrations of relatively rare elements such as lithium, cesium, and uranium?
A) welded tuff sheets
B) granitic pegmatites
C) diorite plutons
D) basaltic lavas

Question

Quizplus · Accepted Answer

Granitic pegmatites are known for containing gem-quality crystals of minerals such as beryl and tourmaline, as well as high concentrations of rare elements like lithium, cesium, and uranium.

What Small, Intrusive Igneous Rock Bodies Often Contain Gem- Quality