quartz

Image credit: R. Weller, Cochise College

Uncredited images and diagrams: Scott Brande

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augite bauxite biotite calcite chalcopyrite

copper corundum K-feldspar fluorite galena

garnet graphite gypsum hematite halite

hornblende limonite magnetite muscovite olivine

plagioclase quartz microcrystalline quartz sulfur

staurolite sphalerite talc

quartz

Interactive 3D Model

• Cellphone display

• Laptop/Desktop: click model below

Important Properties

Learn to Observe

• Observe and Learn

• A short video by Prof. Vince Cronin (geology, Baylor University)