Explanation
Weigh the sodium carbonate again. A chain like carbonate mineral. Monoclinic system. crystal is plate or column, white or gray, glass luster. Solution. Dien hardness 2.5-3, density 2.21g/m3, easily soluble in water. Heat to release C () 2. It is produced in salt lakes and mineral springs and coexists with thermonatrite, trona, thenardite, monoclinic sodalite, etc. It is the raw mineral material of the soda industry.
Classification
Natural materials and products -> Mineral materials