feldspath
spar
moonstone
oligoclase
orthoclase
plagioclase
feldspathic
augite
beryl
chlorite
chrysoberyl
clays
felspar
freestone
gneiss
gypsum
hematite
hornblende
kaolin
limestone
locater
magnesite
mica
peridot
sandstone
silex
soapstone
talc
without