Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
monoclinicraresilicates
Euclase
BeAlSiO4(OH)
The image displays a well-formed, transparent, pale blue to greenish euclase crystal with distinct facets and a vitreous luster.
Euclase Physical Properties
Mohs Hardness
7.5Crystal System
monoclinicLuster
vitreousStreak Color
whiteCleavage
perfect on {010}Fracture
conchoidalSpecific Gravity
3.05Colors
pale blue, pale green, colorless, whiteTransparency
transparentType Locality
Borborema mineral province, Rio Grande do Norte, Northeast Region, BrazilMineral Group
silicatesUses
jewelry, collectorAssociated Minerals
beryl, phenakite, topaz, quartz, mica, feldsparRarity
rareGeological Context
Euclase is a rare beryllium silicate mineral typically found in pegmatites, especially those rich in beryllium, and in mica schists or hydrothermal veins.
