712 



GEOLOGY AND MINING INDUSTRY OF LEADVILLE. 



Analysis No. XXX III is that of a sample of chamber and flue dust from the Ohio 

 and Missouri smelter. This dust bad a reddisb-brown tinge, due to peroxide of iron. 



Analysis No. XXXIV is that of a mixture of equal parts of flue and chamber dust 

 from the American, California, Gumming & Finn, Grant, La Plata, and Billing & 

 Eilers smelters. The sample thus formed had a blackish color, due chiefly to fine char- 

 coal dust. 



Analyses XXXIII and XXXIV. Chamber dust. 



EJeinen tary. 



XXXIII. XXXIV. ! 



Lead ., 



Silver 



Gold 



Bismuth 



Copper 



C.idmium 



Iron 



M.tnganese 



Zinc 



Arsenic 



Antimony 



Tin 



Aluminium 



Calcium ' 



Magnesium 



Potassium 



Sodium 



Alumina 



Lime 



Magnesia 



AljOa, FciOa, PbO, ZnO, CaO, MgO, 

 K2O, Na20 (combined with SiOj). 



W.iter 



Suli>l]uric acid 



25. 535772 

 0. 13023c; 

 0. 000100 

 n. 013460 

 0. 003992 



0. 017500 

 16. 063305 



1. 478780 

 3.311400 

 0. 176715 

 0. 083560 

 0. 001180 

 0. 011300 

 0. 235420 



0. 022000 

 •0. 026000 

 0. 175000 



1. 955000 

 4. 197600 

 0.835119 



2. 391447 

 0. 585000 

 2. 641850 



38. 620520 

 0. 121200 

 0. 000066 

 0. 090610 

 0. 099000 

 0. 012200 



13.340060 

 0. 598615 

 1.303740 

 0. 090910 

 0. 087740 

 0. 001180 

 0. 003000 

 0. 224700 

 0. 020900 

 0. 071000 

 0.114000 



2. 627000 



3. 214880 

 2. 275000 



0. 912500 

 2. 440820 



Carbouic acid 



Phosphoric acid 



Titanic acid , 



Silica (from slag and silicate of lead) , 

 Silica (from quartz .ind refractory 



silicates) , 



Oxygen 



Sulphur 



Selenium nnd tellurium 



Chlorine 



Bromine 



Iodine 



Carbon (coke, charcoal, graphite) . 



Indium, thallium, new metiil 



Baryta 



Potash 



Soda 



Graphite 



Loss . 



0. 185484 

 0. 008000 

 15.126533 



2. 407000 



8. 972380 

 0. 444300 



Traces 



1. 321660 

 0. 244530 

 0. 012660 



9. 240000 

 Traces 



0. 150700 

 100. 000000 



3. 175120 

 0. 487400 

 0. 033000 

 9. 704500 



3. 780000 

 7.919895 

 1. 174000 

 Marked 

 traces 

 1. 200490 

 0. 242330 

 0. 012080 

 5. 063000 

 Traces 

 0. 215000 

 0. 035000 



0. 025000 



0. 665000 



35. 349 

 0. 01925 



