euclase

[yoo-kleys, -kleyz]

noun

1. a rare green or blue mineral, beryllium aluminum silicate, BeAlSiO 4 (OH), occurring in prismatic crystals.

Word History and Origins

Origin of euclase¹

From French, dating back to 1795–1805; eu-, -clase

Example Sentences

Ha�y the name euclase, from the Greek εὖ, easily, and κλάσις, fracture.

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EUCLASE, a very rare mineral, occasionally cut as a gem-stone for the cabinet.

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Some other minerals in which it occurs are phenakite, euclase, and chrysoberyl.

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It never occurs naturally in the free state, but is always combined, usually with silica or alumina, or both; as in the minerals phenacite, chrysoberyl, beryl or emerald, euclase, and danalite.

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