OCR Text |
Show Concentrating Carnotite. The mineral carnotite, whoso chemical chemi-cal relations arc not definitely understood, occurs as an loi pretrmi t Ion between the t'i Tu- K'a 1 os of sh i id stone, sa ys M in I ni; S-'icm c. II r.H been pretty .let.-r-mlneil that Ihe quart. Ki'nln are utuif-f utuif-f i-et ed a ud that tho s.-pa nt 1 Ion problem Is merely one of washing out or otherwise other-wise i-'Mitovliur the silica pniihi.'S from thP vellow carnoilto. Some of the lntier can reiidlly b- slimed off, but much of It rllntrs to the nlllefi, and no process has been found to abrade it from the quarts K-ahiM without puKorl7.ini; these grains. Acid I v.i 1 ment a t the mines Is expensive heuiusf of the heavy freight cIimikcs. which amount to several llmos the cost of the acid itself In the met o .1 i t a n markets. |