Name Prehnite
Scientific Name Ca2AI(AISi3)(OH)
Category Minerals & meteorite
Origion China

Prehnite, named after Colonel Hendrik von Prehn who discovered it. It is phyllosilicate of calcium and aluminium. Prehnite crystallizes in the orthorhombic crystal system. It is brittle with an uneven fracture and vitreous to pearly luster. Its color varies from light green to grey or white. It is translucent.

Physical Description

The specimen is about 3.375 x 2.0 inches. It weights 7.7 oz. The color is light green and has an cloud like appearance.