The following materials are considered minerals. Explicitly speaking, a mineral has one specific chemical composition (whereas a rock can be an aggregate of different minerals or mineraloids), however rocks, mineraloids and minerals are considered similar enough to bundle into one typing. All are inorganic and naturally occurring, and are typically not ductile or conductive like metals. While the rock crystals themselves are not metallic, because they are not malleable they are often affixed to metal armors (preventing some classes, such as Druids, from wearing them).
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