Explanatory notes
… Beryllium is obtained almost exclusively from beryl, a double silicate of beryllium and aluminium, which is … from the ore) and barium or other fluorides. A graphite crucible is used as anode and the metal is collected on a … beryllium in all its forms, i.e., unwrought metal (in blocks, pellets, cubes, etc.), products (bars, rods, wire, …