160 



GEOLOGICAL RECONNOISSANCE 



from the ore, contains 0.019 per cent, of silver, equal to 5 ounces of silver 

 in the ton of galena. 



B — GALENA FROM LAWRENCE COUNTY. 



No. 18. Galena, from E. W. Haughton's diggings: 



Occurs associated with a light, ochre-yellow, argillaceous rock, contain- 

 ing oxide of zinc (v. No. 37). 



Is pure sulphuret of lead, with only traces of iron and silver. The 

 lead, smelted from the ore, contains 0.00292 per cent, of silver, equal to 

 0.78 ounces of silver in the ton of galena. 



C-— GALENA FROM CARROLL COUNTY. 



No. 19. Galena, from Coka and Mitchell's diggings: 



Is pure sulphuret of lead, with only traces of iron and silver. The 

 lead, smelted from the ore, contains 0.01083 per cent, of silver, equal to 

 2.9 ounces of silver in the ton of galena. 



TABULAR VIEW — Of the co?nposition of the different kinds of galena 

 from the, counties of Marion, Lawrence, and Carroll. 



CD © c3 



> © C 



~ CN « 



o § w> 



+a +* <*-l 



LOCALITY 



No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 

 No. 



11, from 



12, from 



13, from 



14, from 



15, from 



16, from 



17, from 



18, from 



19, from 



Wood's mine 



New York company's diggings • 



Molton's diggings • 



Seawell's diggings 



Hudson's diggings 



McCarty's diggings 



Jemmy's creek diggings- 



Contain in 100 parts, 

 86.6 parts of lead, 

 with 



Iron. 



E. W. Houghton's diggings- 

 Coka & Mitchell's digrsrinsrs- 



none 

 0.103 

 0.160 

 none 

 trace 

 none 

 0.100 

 trace 

 trace 



Silver. 



0.00624 

 0.01066 

 0.00294 

 0.14014 

 0.00746 

 0.00825 

 0.01900 

 0.00292 

 0.01083 



1-67 

 2-88 

 0-784 

 37-44 

 2-00 

 2-25 

 5-00 

 0-78 

 2-90 



Only one of these ores (No. 14) would probably pay for the extraction 

 of the silver; the others are good lead ores. If, by sinking shafts, and 

 ascertaining the extent of the ore-deposit at Seawell's diggings, the pre- 

 sence of a sufficient quantity of the ore can be proved, there is no doubt 

 that, with judicious management, the extraction of silver will prove very 



