Augen Gneiss Specimen (Metamorphic Rock), Pack of 12

Details

Gneiss is a high-grade metamorphic rock formed from the alteration of other rocks under intense heat and pressure. The minerals in the rock become foliated, resulting in alternating light and dark bands. This rock sample is great for demonstrating metamorphic properties and can be used most effectively in lessons on the rock cycle and metamorphic rock identification.