A rare mineral, a variety of heulandite (a zeolite mineral) found in specific geological formations.
Named after a mineralogist or prominent figure in geology (the exact attribution varies by source), with the mineral suffix '-ite' that is standard for naming rocks and minerals discovered in the 19th and 20th centuries.
Mineralogists name minerals after everything from chemists to towns to their wealthy patrons, which means Heinrich's name got frozen into a rock formation that hasn't changed in millions of years—a weird kind of immortality.
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