Keywords

A hexagonal mineral, the native metallic element As.  It is brittle and commonly occurs in steel-gray and granular or kidney-shaped masses.

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.