Definitions for euclaseˈyu kleɪs, -kleɪz

This page provides all possible meanings and translations of the word euclase

Random House Webster's College Dictionary

eu•claseˈyu kleɪs, -kleɪz(n.)

  1. a rare green or blue mineral, beryllium aluminum silicate, BeAlSiO4(OH), occurring in prismatic crystals: used as a gem.

    Category: Mineralogy

Origin of euclase:

1795–1805; < F; see eu -, -clase

Wiktionary

  1. euclase(Noun)

    A monoclinic beryllium aluminium hydroxide silicate mineral, a product of the decomposition of beryl in pegmatites.

Webster Dictionary

  1. Euclase(noun)

    a brittle gem occurring in light green, transparent crystals, affording a brilliant clinodiagonal cleavage. It is a silicate of alumina and glucina

Freebase

  1. Euclase

    Euclase is a beryllium aluminium hydroxide silicate mineral. It crystallizes in the monoclinic crystal system and is typically massive to fibrous as well as in slender prismatic crystals. It is related to beryl and other beryllium minerals. It is a product of the decomposition of beryl in pegmatites. Euclase crystals are noted for their blue color, ranging from very pale to dark blue. The mineral may also be colorless, white, or light green. Cleavage is perfect, parallel to the clinopinacoid, and this suggested to René Just Haüy the name euclase, from the Greek εὖ, easily, and κλάσις, fracture. The ready cleavage renders the stone fragile with a tendency to chip, and thus detracts from its use for personal ornament. When cut it resembles certain kinds of beryl and topaz, from which it may be distinguished by its specific gravity. Its hardness is rather less than that of topaz. It was first reported in 1792 from the Orenburg district in the southern Urals, Russia, where it is found with topaz and chrysoberyl in the gold-bearing gravels of the Sanarka. Its type locality is Ouro Prêto, Minas Gerais, Southeast Region, Brazil, where it occurs with topaz. It is met with as a rarity in the mica-schist of the Rauris in the Austrian Alps.

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