A rare mineral composed of hydrated magnesium silicate, named after its chemical composition or discoverer.
From the mineral compound structure + '-lite' (Greek lithos, stone). The name likely derives from 'Dewey,' possibly honoring a geologist or mineralogist, combined with the mineral suffix '-ite.'
Deweylite is so rare that most geologists will never hold a specimen—it forms only under very specific conditions in altered magnesium-rich rocks, making it more valuable to collectors than to science!
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