What is "bakerite"

n. (context mineral English) A monoclinic-prismatic mineral containing boron, calcium, hydrogen, oxygen, and silicon.

Bakerite is the common name given to hydrated calcium boro-silicate hydroxide, a borosilicate mineral (chemical formula CaB(BO)(SiO)(OH)·(HO)) that occurs in volcanic rocks in the Baker, California area.

It was first described in 1903 for an occurrence in the Corkscrew Canyon Mine of the Black Mountains, Furnace Creek District, Death Valley National Park, Inyo County, California, US. It was named for Richard C. Baker, a director of the Pacific Coast Borax Company.