Title
tourmaline supergroup
Composition
--
Crystal System
Trigonal
Status at Tsumeb
Believed valid
Abundance
Very rare
Distribution
Country rocks (feldspathic sandstone).
Paragenesis
Rock-forming (detrital).
Type Locality
No
Entry Type
Species TSNB354
General Notes
Lombaard et al. (1986) listed tourmaline as an accessory mineral of detrital origin in the feldspathic sandstone, derived from sediments of the Mulden Group.
Associated Minerals
albite; almandine; anorthite; biotite series; calcite; clinochlore; epidote; fluorapatite; graphite; ilmenite; magnetite; microcline; montmorillonite; muscovite; orthoclase; quartz; rutile; titanite; zircon
