colemanite

listen to the pronunciation of colemanite
الإنجليزية - التركية
kolemanit (sulu kalsiyum-borat minerali)
الإنجليزية - الإنجليزية
A hydrous borate of lime occurring in transparent colorless or white crystals, also massive, in Southern California
A white, grey or colorless mineral form of calcium borate; a principal source of boron