FeS₂ and CaCO₃ - Mohs Hardness: 6 - 6½ and 3. In calcite and quartz veins, pyrite is commonly associated with chalcopyrite and other sulfide minerals and metallic ores. Pyrite oxidizes to other iron sulfate minerals that in turn alter to limonite, so the presence of a weathered ‘rusty’ limonite layer may indicate the presence of pyrite in the underlying rock.
UT Department of Environmental Sciences
The University of Toledo
Digital Initiatives, University of Toledo Libraries
environmental sciences; virtual exhibitions
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