a rare mineral consisting of hydrated copper and iron silicate, named after the mineralogist Wilhelm Haidinger.
Named after Wilhelm Haidinger (1795-1871), Austrian mineralogist and physicist; the '-ite' suffix denotes a mineral, following standard mineralogical nomenclature.
Haidinger also discovered 'Haidinger's brush,' an optical phenomenon where polarized light creates a brushlike pattern in your vision—so this mineralogist got both a mineral and a visual effect named after him!
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