A rare mineral with specific crystal structure, named after its discovery location or composition.
Named after Arzrun (a location) + -ite mineral suffix. Following standard mineralogical nomenclature where new minerals are named after their type locality or discoverer.
Mineralogists have named thousands of minerals after places and people—if you discover a new mineral, you get the honor of naming it, which is why 'Arzrunite' exists on some obscure mineral list.
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