Deveral Webley

Computer Concepts

Room 210

Minerals are substances that exist in nature as crystalline solids.  Organic substances that make up living organisms are not considered minerals.  Minerals have definite chemical composition and specific physical properties.  Some of the physical properties of minerals are their color, luster, hardness, density, cleavage, and fracture.  It is possible to identify minerals by studying their chemical composition and physical properties.