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structure, graphite and diamond have distant physical properties. Graphite falls into the hexagonal System.....more
,(Co,Fe)AsS).Arsenopyrite has the similar physical properties of marcasite, but these two can.....more
properties. Luzonite is mined in Chin-Kua-Shih, Taipei and on the east coast of Taiwan. It is usually.....more
contains iron, manganese and other minerals. Its optical properties vary with the amount of iron.....more
