CaSO4 | Mohs 3 - 3.5 | Orthorhombic crystal system
Angelite is a soft, blue to light blue variety of Anhydrite (CaSO₄), a calcium sulfate mineral. It is primarily composed of anhydrite that has undergone a process of hydration, forming a crystalline structure. Angelite is known for its smooth texture and powdery blue colour.
