Keywords

A surficial mineral deposit formed by mechanical concentration of mineral particles from weathered debris.  The common types are beach placers and alluvial placers. The mineral concentrated is usually a heavy, durable mineral such as gold, cassiterite, or rutile.

Geological keywords, such as “granite”, “lake”.  The definitions are generally taken from the AGI Glossary of Geology.  Keywords with a geographic context (e.g. Cape Smith Fold Belt, Selwyn Basin, Grenville Province) are assigned to a separate category.