Mineral Species: Silicates
Chemical Formula: Al2SiO5
Mohs Scale Hardness: 5.5 - 7
Location: Brazil
Typical Appearance: Elongated crystalline blades. Blue, green, black or orange.
Mineral Species: Silicates
Chemical Formula: Al2SiO5
Mohs Scale Hardness: 5.5 - 7
Location: Brazil
Typical Appearance: Elongated crystalline blades. Blue, green, black or orange.