Rocks & Minerals

Cinnabar has been the major source of mercury throughout ...

Chalcedony is quartz, but very fine crystals, which produces ...

A metamorphic rock that forms inside veins of other ...

Copper is usually found in other minerals. When found ...

This is a mineral classification often used for any ...

This mineral is the base form of uranium, and ...

Chemical Formula: As Class: Native Elements Hardness: 3.5 Coloration: light ...

Analcime, sometimes called Analcite, is a silica crystal. ...

Almandine is the most common of the Garnets and ...

Hemimorphite got its name because its crystals develop in ...