Barite BaSO4
barite of informationBarite  Crystal Data:
Orthorhombic. Point Group: 2/m 2/m 2/m. Commonly in well-formed  crystals, to 85 cm, with over 70 forms noted. Thin to thick tabular {001}, {210}, {101}, {011};  also prismatic along [001], [100], or [010], equant. As crested to rosettelike aggregates of tabular  individuals, concretionary, fibrous, nodular, stalactitic, may be banded; granular, earthy, massive.

Barite Physical Properties:
Cleavage: {001}, perfect; {210}, less perfect; {010}, imperfect.
Fracture: Uneven. Tenacity: Brittle. Hardness = 3–3.5 D(meas.) = 4.50 D(calc.) = 4.47
May be thermoluminescent, may fluoresce and phosphoresce cream to spectral colors under UV. Read More