Application of the EM and EPMA Techniques in the Study of the Cause of Graphite and Kaolinite Deposit Formation Wen Shida;Chen Pinde;Ma Lequn;Zhang Zhenyu;Huang Cunji;He ChangzhuThe crystal form, the crystal size, the euhedral crystal degree, the transparancy and the association minerals of graphite and kaolinite were studied by EM and EPMA techniques. Some information useful for explain- ing the cause of formation of graphite and kaolinite deposits has been obtain- ed.