Wiktionary

helenite

English edit

 
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Alternative forms edit

Etymology edit

Helen +‎ -ite. From Mount St Helens, whose volcanic ash is used to manufacture helenite.

Noun edit

helenite (uncountable)

  1. A greenish artificial gem, made by melting and vitrifying volcanic ash from the 1980 eruption of Mount Saint Helens.

Synonyms edit

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