� Blue, black, gray or brown Barite is widely used for petroleum well drilling. The applicable Barite color is selected depending on the ore body. Barite Chemical Formula The chemical formula for this mineral is BaSO4. Barite Properties Here are some basic properties of this material: Appearance: It has a transparent crystalline appearance. Color: Its color may vary from colorless to white and light shades of yellow, blue, brown and grey. Molecular Weight: The molecular weight of this material is 233.4 grams per mole. Density: The density of Barite is 4.48 g/ cm3. Solubility: It is almost insoluble in water. Crystal System: It has orthorhombic crystal system. Crystal Habit: Tabular parallel to base, fibrous, nodular to massive Fracture: It has irregular and uneven fracture. Hardness: The hardness of this mineral ranges between 3 and 3.5 on Mohs scale. Luster: Barite crystals have vitreous pearly luster. Specific Gravity: The specific gravity of Barite is somewhere between 4.3 and 5. Streak: It has white streak. Tenacity: The tenacity of this crystalline mineral is brittle. Diaphaneity: It has transparent to opaque diaphaneity. Optical Properties: Biaxial positive Refractive Index: nα = 1.6341.637; nβ = 1.6361.638; nγ = 1.6461.648