CH4 and contains melt of potassium-rich aluminosilicate, mafic aluminosilicate, carbonatite and sulfides.

• CH4挥发份的含富钾铝硅酸盐熔体、富镁铁铝硅酸盐熔体、碳酸岩熔体及硫化物熔体的富SiO2硅酸盐熔体。