Description

Epidote is an abundant rock-forming mineral, but one of the secondary origin. Many of the characters of the mineral vary with the amount of iron present. Prismatic, columnar crystals, often shiny, finely striated faces. The color is green, gray, brown or nearly black but usually a characteristic shade of yellowish-green or pistachio green.

Albite is a common feldspar mineral and a sodium aluminosilicate that occurs most widely in pegmatites and felsic igneous rock such as granite. It also may be found in low-grade metamorphic rocks. Albite usually forms brittle, glassy crystals that may be colorless, white, yellow, green pink or black.