Metamorphic Sillimanite, Lanark, Ontario Sillimanite is an aluminosilicate mineral typically occurring as fibrous masses, commonly in schist or gneiss

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Metamorphic Sillimanite, Lanark, Ontario Sillimanite is an aluminosilicate mineral typically occurring as fibrous masses, commonly in schist or gneiss.

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Keywords: aluminosilicate, aluminum, andalusite, crystal, crystals, fibrolite, fibrous, gneiss, high-grade, kyanite, lanark, metamorphic, metamorphism, mineral, ontario, orthorhombic, pelitic, polymorph, prismatic, schist, silicate, sillimanite, system