Barite

Physical Properties
Chemical formula BaSO4
Class Sulfate
Crystal system Orthorhombic
Habit Variable
Tabular
“Barite rose”
“Desert rose”
“Crested barite”
Massive concretions
Veins
Color White
Grey
Colorless
Hardness 3 to 3.5
Specific gravity 4.5
Cleavage Perfect (001), good (010) and
{210}
Fracture Uneven
Luster Vitreous
Pearly
Transparency Transparent to translucent
Streak White
Optical Properties
PPL Colorless
XPL Up to 2nd order yellow
δ 0.012
after Perkins, 393

Barite in Hand Sample

Barite hand sample

Whitish, radiating barite with reddish quartz and purplish-blackish botryoidal hematite on quartzite

Barite horizon in Mapepe Formation, Fig Tree Group, Barberton Greenstone Belt, South Africa

Barite in Thin Section

Stay tuned!

Further Reading

Barite at webmineral.com

Barite at mindat.org