Basalt thin section.

             Basalt thin section crossed polars view.

                  Feldspar plagioclase, augite and glass are the main minerals of this basalt section.

The dark material in the LPA view, spread all over this section is a glassy silicate material.

       Plane polarized view. Light brown crystals are augite, the alteration products exhibit a deep brown color. Glasses appear also light brown in this LPNA view.