A rare mineral; a variant or specific geological formation (term used in mineralogy).
Likely derived from a proper name (possibly 'Custer') with the mineral suffix '-ite,' a standard way to name minerals. Many minerals are named after people or places.
Mineral names ending in '-ite' are everywhere in geology—magnetite, hematite, feldspar—and many are named after geologists, explorers, or locations. It's how scientists honor each other.
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