| OCR Text |
Show 22. WEST DALY crude and For insta.nce usually shipp6d percentage of zinc this to determining facto rs. r are the over 1510 Pi and 20 ore, however if crude a as ore be may sent the character of and the amount containing ore an classes, milling into two Zinc and silve contained. mhaera1s to according ore, divided is from the mine Ore MILL. e unce s contains it the mill to a Ag-ls high in order separate the zinc trom the lead minerals. A. smelter calls tor a contra.ct with the very high base treatment tor zinc. Thelrore this save the lead-zinc S. & R. A"_ ores mining smelter a.t and charge company does not is not very especially if they Murray penalize careful to high s'ilvar contain va.lues. Both .he ores of crude milling lead, iron, silver, zino and quartz. AS the oxidized 1evll all of the 'l'-htt lead in various of and the shipping e c eues and a.nd a gangue of extend below the 400 foot being shipped coarse copper in complex are sulphides. gra.nular galena; zinc occurs we1lJcr,ystallized, another type is the granular (yellow) found exi$ts ledrlte and as . "... is present now are forms, th', usual variety is'the yellow resinous type sphalerite spha.lerite ores does not zone soms ores as also small resinous but very here Pyrite crystals in relatively small amounts. Copper only in very sma.l1 a.mount8 chalcopyrite. The and mecha.nical triable. but is found 'bclth silver i8 found combinations with all of existing tatra- as in chemical the above minels. |
