It is frequently associated with minerals such as hardystonite (fluoresces violet blue), esperite (fluoresces bright yellow), calcite (fluoresces orange-red), franklinite (non-fluorescent) and willemite (fluoresces green).
This substance is frequently associated with minerals such as hardystonite, which emits a violet blue glow, esperite, which glows brightly yellow, calcite, which glows orange-red, franklinite, which does not fluoresce, and willemite, which glows green.