EntityQ3961864· pop 13· linked from 9 articles

sinhalite

Sinhalite is a borate mineral with formula MgAl(BO4).

Mineral.name: Sinhalite
Mineral.image: Sinhalite-656999.jpg
Mineral.imagesize: 260
Mineral.formula: MgAl(BO4)
Mineral.IMAsymbol: Shl
Mineral.system: Orthorhombic
Mineral.color: White, gray, grayish-blue, pale to dark brown, yellow, yellowish-brown, greenish-brown, green, brownish-pink, pale pink
Mineral.habit: Grains, rolled pebbles, irregular masses. Rarely euhedral crystals.
Mineral.cleavage: None
Mineral.fracture: Conchoidal
Mineral.mohs: -7
Mineral.streak: White
Mineral.diaphaneity: Transparent, translucent
Mineral.gravity: 3.46 to 3.50
Mineral.density: 3.475-3.5
Mineral.opticalprop: Biaxial (-)
Mineral.refractive: 1.665 to 1.712
Mineral.birefringence: 0.036 to 0.042