Nomenclature
Bolus armena; bolus rubra; red bole. Description and references
A red variety of clay (aluminum silicate) contg
naturally occurring ferric oxide (hematite). Originally found in
Armenia.
Properties
Reddish, soft, unctuous pieces; adheres to the
tongue; easily reduced to powder. Insol in usual solvents. d 1.9-2.0.Use
For coloring powders, cements, and as a pigment.
Therapeutic Category
Adsorbant; protectant.