minnesotaite

mineral

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July 23, 2026

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Minnesotaite is a hydrous silicate of iron with the chemical formula Fe₃Si₄O₁₀(OH)₂. It is likely isomorphous with talc. The name is derived from the state of Minnesota. Minnesotaite is a mineral, and minerals are naturally occurring solid chemical compounds with a specific crystal structure.12345

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olivine
Metamorphic rocks
…with the minerals greenalite (iron-serpentine), minnesotaite (iron-talc), and grunerite (iron-amphibole) in various metamorphic stages. In chemically more complex environments, which, in addition to the above components, also involve lime (CaO) and alumina (Al₂O₃), fayalite may be associated with hedenbergite, orthopyroxene, grunerite, and almandine (iron-garnet).
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…with the minerals greenalite (iron-serpentine), minnesotaite (iron-talc), and grunerite (iron-amphibole) in various metamorphic stages. In chemically more complex environments, which, in addition to the above components, also involve lime (CaO) and alumina (Al₂O₃), fayalite may be associated with hedenbergite, orthopyroxene, grunerite, and almandine (iron-garnet).
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