Geology & Rocks
Quartz
Quartz is the most common mineral and an important constituent of gneiss and granite. Its colour is white, grey or glass-clear.
Created: March 10, 2022 10:31 AM Tags: Mineraler
Quartz is the most common mineral and an important constituent of gneiss and granite. Its colour is white, grey or glass-clear. Completely pure quartz is rock crystal and is as clear as glass. The shape is hexagonal with a pyramid at the top.
Quartz from Tibet. Photo: JJ Harrison, CC BY-SA 2.5, via Wikimedia Commons