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What Does Pyrrhotite Do To Concrete?

What Does Pyrrhotite Do To Concrete?

What Is Pyrrhotite?  Pyrrhotite is a type of iron sulfide. Pyrrhotite can be found with pentlandite in basic igneous rocks, veins, and metamorphic rocks. It is a a nonstoichiometric variant of FeS, the mineral known as troilite.   What Happens When Pyrrhotite Is...