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löllingite

American  
[lel-ing-ahyt] / ˈlɛl ɪŋˌaɪt /
Or loellingite,

noun

  1. a mineral, iron arsenide, FeAs 2 , occurring in steel-gray prismatic crystals.


Etymology

Origin of löllingite

1840–50; named after Lölling, town in Austria where found; -ite 1