Sentences with phrase «pyrite ores»
Not exact matches
The structures were exceptionally well preserved, the eggs and exoskeletons of the trilobites replaced with an iron sulfide ore called pyrite.
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Acid mine drainage (AMD) refers to the outflow of acidic water from coal or metal mines, often abandoned ones where ore - or coal mining activities have exposed rocks containing the sulphur - bearing mineral pyrite.
Re — Os isotopic dating of molybdenite and pyrite in the Baishan Mo — Re deposit, eastern Tianshan, NW China, and its geological significance Dating of lead - zinc deposits is of critical importance for better understanding of ore genesis, but has long been a big challenge due to the lack of
Commercial concentrations of gold are found in widely distributed areas: in association with ores of copper and lead, in quartz veins, in the gravel of stream beds, and with pyrites (iron sulfide).