How do I identify feldspar?

Question

I am confused about this mineral. HELP!!!

Answer 1

Feldspar is the most common mineral in the Earth’s crust, so you are very likely to find it in the rocks you collect! It is found in all of the three rock types, but is most common in intrusive igneous rocks like granite where the crystals look white or pink.

Answer 2

There are several common feldspars, the lighter one is Potassium Feldspar (Orthoclase) and Calcium Feldspar (Plagioclase) is darker and often exhibits twinning striations.