Witkop

DMA SERIES 1501.SHEET SG35-6.SCALE 1:250,000.KENT,L.E.ET AL.FLUORSPAR IN THE UNION OF SOUTH AFRICA ANDSOUTH WEST AFRICA.GEOL.SERIES.BULL.NO.14.DEPT.OF MINES.S.A.PRETORIA.1943.PLATE I.BATTELLE INSTITUTE.WORLD MARKET FOR FLUORINE MINERALS ANDCHEMICALS. JUNE,1973.GENEVA,SWITZ.P.A93.SOUTH AFRICAN FLUOSPAR - PENETRATING THE EXPORT MARKET, ININD. MINERALS, CLARKE, G., SEPT. 1981, PP.69-79.A REVIEW OF THE FLUOSPAR MINING INDUSTRY IN SOUTH AFRICA, INPROC., 12TH CMMI CONGRESS, H.W. GLEN, ED., RYAN, P.J.,1982 AFR. INST. MIN. METALL.