sagenite

[ saj-uh-nahyt ]
/ ˈsædʒ əˌnaɪt /

noun

a variety of rutile occurring as needlelike crystals embedded in quartz.

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Origin of sagenite

1795–1805; < French sagénite < Greek sagḗn(ē) net (cf. seine) + French -ite -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020