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Strontianite (Sr C O 3) is an important raw material for the extraction of strontium.It is a rare carbonate mineral and one of only a few strontium minerals. It is a member of the aragonite group.
Barytocalcite is an anhydrous barium calcium carbonate mineral with the chemical formula Ba Ca(C O 3) 2.It is trimorphous with alstonite and paralstonite, that is to say the three minerals have the same formula but different structures. [3]
Orthocarpus, or owl's-clover, [1] is a genus of flowering plants in the family Orobanchaceae (broomrapes). They are native to North America. A number of species formerly included in Orthocarpus have been transferred to the genus Castilleja, which includes the plants commonly known as Indian paintbrush.