Question

Give two points each of similarities and dissimilarities of quartz and plagioclase. Follow me plz. ​

Answer 1

Explanation:

Quartz is a common mineral in many metamorphic and felsic igneous rocks that, like plagioclase, also has a non-metallic luster and hardness greater than glass. Unlike plagioclase, however, quartz does not exhibit cleavage, which easily distinguishes it from feldspar minerals.