fulgurite

(redirected from Fulgerite)
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ful·gu·rite

 (fo͝ol′gyə-rīt′, -gə-, fŭl′-)
n.
A slender, usually tubular body of glassy rock produced by lightning striking and then fusing dry sandy soil.

[Latin fulgur, lightning; see fulgurate + -ite.]

fulgurite

(ˈfʌlɡjʊˌraɪt)
n
(Minerals) a tube of glassy mineral matter found in sand and rock, formed by the action of lightning
[C19: from Latin fulgur lightning]