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Id 159
Identification Type Mineral
Name Greigite
Distinguishing Features
Description Occurs in microbial biofilms, as disseminated crystallites, and as framboids. Opaque where visible by light microscopy. In reduced sediments, greigite is often considered a metastable phase transitional between highly reactive iron monosulfide (mackinawite) and pyrite. Common in reduced lacustrine sediments.
Tags
External Resources
Imposters Pyrite

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