colemanite e硬硼钙石
Ground colemanite硼钙石
colemanite-barytes concrete硬硼钙石
Turkey's Colemanite土耳其硬硼钙石
N(名词) a colourless or white glassy mineral consisting of hydrated calcium borate in monoclinic crystalline form. It occurs with and is a source of borax. Formula: Ca2B6O11.5H2O 硬硼钙石