Mineral Species
Orthoclase
Type Locality
No
Composition
KAlSi3O8
Crystal System
Monoclinic
Status at Tsumeb
Believed valid
Abundance
Common
Distribution
Country rocks (feldspathic sandstone)
Paragenesis
Rock-forming (detrital)
Entry Number
Species; TSNB261
General Notes
Orthoclase is a common detrital mineral in the feldspathic sandstone bodies, derived from sediments of the Tschudi Formation (Botha 1960; Söhnge 1964; Lombaard et al. 1986).
Associated Minerals
albite; almandine; anorthite; biotite series; calcite; clinochlore; epidote; fluorapatite; graphite; ilmenite; kaolinite; magnetite; microcline; montmorillonite; muscovite; quartz; rutile; titanite; tourmaline supergroup; zircon
