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helenite

[ hel-uhn-ahyt ]

noun

  1. another word for obsidianite.


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Word History and Origins

Origin of helenite1

First recorded in 1980–85; Helen ( def ) + -ite 1( def ), after the gemstone's accidental discovery following the eruption of Mount Saint Helens, in Washington State, in 1980

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Helengradhelenium