Fluorite occurs in a variety of geological environments deposited under a wide range of chemical and physical conditions, but commercial sources are primarily hydrothermal. The most common deposits occur as veins, mantos (replacement strata-bound orebodies), or replacement deposits. Other important deposits include stockworks and fillings in shattered zones, carbonatite and alkalic rock complexes, residual concentrations resulting from the weathering of primary deposits, and recoverable gangue in base metal deposits.