DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY
Perthite, thin section viewed in polarized light. Perthite is a rock formed from interspersed layers of sodium and potassium feldspar minerals. Feldspars are aluminosilicates that are the most common components of igneous rocks (those formed from magma).
Model release not required. Property release not required.