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Chemical Composition: SrSO4
Group: Barite
System: Orthorhombic
Family: Sulphates
Hardness: 3 - 3.5
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- Prismatic or more rarely tabular crystals
- Perfect cleavage parallel to base
- Nonmettalic; vitreous to pearly luster
- Becomes fluorescent when impurities of organic substances
are present
- Other colours: colourless, milky white, yellowish, pale-blue
- Heavy, fragile
- Transparent to translucent
- Slightly soluble in water and acids
- Fuses easily
- White streak
- Specific gravity 3.96
- Found in: England, Italy, Sicily, USA, former USSR
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