Mineral - Turquénite

Name Turquenite
Class Borates
Category Mineral
Crystal system Monoclinic
Chemical composition Calcium silico-borate (Ca₂B₅SiO₉(OH)₅)
Hardness (Mohs scale) 3,5
Transparency Translucent to opaque
Geographical origin Canada, United States, Germany, Austria, Italy, Turkey