Tags: Chemical Substance, Mineral.

Euclase is a beryllium aluminium hydroxide silicate mineral (BeAlSiO4(OH)). 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 (Be3Al2Si6O18) 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.

Euclase_(Brésil)_.jpg

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