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with pyrite of isometric crystal system.Fresh marcasite is light brass-yellow or light bronze-yellow after.....more
be identified according to the different colors, silver and light brass yellow. After weathering.....more
yellow, brownish yellow and brown while the white streaks will turn brown.The amount of iron contained.....more
,arsen (As),selenium (Se) and tellurium(Te). Pure chalcopyrite has the brass yellow color, readily.....more
zinc is wurtzite, dimorphous with hawleyite. Greenockite fluoresces orange yellow under ultraviolet.....more
streaks.When exposed to light for a long period of time, realgar will deteriorate into brown-yellow.....more
on the Earth's surface, weathers into yellow Ferrimolybdite (Fe2(MnO4)3.8H2O), which is an important.....more
