THE PROPERTIES AND THE CRYSTAL STRUCTURE OF THE COMPOUND Ca_(10)Si_6O_(21)Cl_2 IN THE THREE COMPONENT SYSTEM CaO-SiO_2-CaCl_2

• 三元系统CaO-SiO_2-CaCl_2中的新化合物Ca_(10)Si_6O_(21)Cl_2的性能和晶体结构