CHARACTERIZATION, POTENTIALITY AND RECOVERY OF HIGH VALUE-ADDED ORES LOST IN GOLD PANNING IN THE VAVATENINA DISTRICT - RASOANAIVO, J. L.; AZIZ, I.; L.LEHIMENA; A.O.RAVONINJATOVO; ANDRIANAIVO, L.; RATIARISON, A. A. (International Journal of Advance Research and Innovative Ideas In Education, 2019)