potash  search
BTsedimentary rocks
 .chemically precipitated rocks
 ..evaporites
 ...potash
RTalunite
 Searles Lake
SNSee List C for use as a commodity term.
potash alum  search
USEalum
potash bentonite  search
USEK-bentonite
potash feldspar  search
USEK-feldspar
potash mica  search
USEmuscovite