Keywords

Fluorides are inorganic, monatomic anions of fluorine, with the chemical formula F−, whose salts are typically white or colorless. Fluoride's salts and minerals are important chemical reagents and industrial chemicals.

Fluoride is the simplest fluorine anion.  Fluoride ions occur on Earth in several minerals, particularly fluorite, but are present only in trace quantities in bodies of water in nature.

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.