Barium does not occur naturally in its pure form, because of its reactivity. It is an alkaline earth metal. The most common barium mineral is barium sulfate, or barite. It has many uses including spark plugs, fluorescent lamp electrodes, glassmaking, rubber production, green fireworks, and others.
Solvay SA (OTC: SVYSY) is a Belgian chemical and pharmaceutical company that specializes in ultra-pure barium carbonate.
Acadian Mining (TSE: ADA) - http://www.acadianmining.com/ - Lake Ainslie Barite-Fluorite Deposits in Cape Breton Island, Nova Scotia
American Elements - http://www.americanelements.com/ba.htm - Barium acetate, barium bromide, barium bromide, barium carbonate, barium chloride, barium fluoride, barium hydroxide, barium nitrate, and barium sulfate.
Lara Exploration (CVE: LRA) - http://www.laraexploration.com/ - Barium found at their Condorama project in Cuzco, Peru
International Isotopes (OTC: INIS) - http://www.intisoid.com/?page_id=3 - Provides radiochemical products including barium-133, cobalt-60, cobalt-57, and iodine-131.
Bass Metals (ASX: BSM) - http://www.bassmetals.com.au/ - Fossey Zone barite deposit in Tasmania.
