Kyanite Mining
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2022 7 11 Kyanite is a blue to light green, triclinic mineral that occurs in long, thin bladed crystals and crystalline aggregates in gneiss, schist, and pegmatites. Andalusite is a yellow, brown, green, or red orthorhombic mineral that occurs in thick, almost green prisms in schist, gneiss, and hornfels. Gem quality andalusite exhibits a strong