Commodity20062007200820102011
Felspar$1,462$8,850 $11,858$11,353
Fluorspar, cont. by wt. 97%/less of calcium fluoride  $1,788  
Leucite; nepheline & nepheline syenite  $3,445$10,210$540
Total$1,462$8,850$5,233$22,068$11,893