A mineral or stone, possibly named after Chester or associated with that region, though specific properties are unclear.
Following the pattern of '-lite' minerals (from Greek 'lithos' for stone), combined with 'Chester.' The term appears rarely and may be a local or obsolete mineral designation.
Minerologists used to name every rock after the location where it was found, creating thousands of place-based stone names, most of which nobody uses anymore because we figured out they were just common minerals with fancy regional names.
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