Hardness: 3 - 3.5
Habit: Fine grained aggregates
Colours: Colourless, white, gray, yellowish, brown, reddish, bluish or greenish
| ||Crystal System: Orthorhombic|
Reaction with HCl: None
Identification in hand sample:
High specific gravity is best indicator, colour and fracture are also helpful.
Common in hydrothermal veins, associated with galena, sphalerite, pyrite, quartz, fluorite and carbonates.
Industrial / ecomonic uses:
Primary ore for barium, also used as an additive to drilling mud (because of high SG). Has over 2000 uses in industry.