350 



Analysis of Ores from North Carolina. 



No. 3. Copper and zinc ore, by William M. Uhler. 

 taining both sulphuret and oxide of copper. 





Snlphuret of lead, 



" copper, . 



" zinc, 



Oxide of iron, (partly sulphuret,) 

 Silica, .... 



g I Alumina, 

 O L Magnesia, 



0.81 

 54.27 

 23.86 



8.32 

 10.20 



1.96 



trace 

 99^42 



Black, con- 



Meials. 



0.70 

 36.08 

 15.92 



5.768 



58.468 



No. 4. Yellowish (ferruginous) carbonate of lead, by J. V. Z. 

 Blaney. 



Silver, 

 Carbonate of lead, 



" copper, . 



Sulphuret of zinc, (carbonate?) 

 Oxide of iron, 



" manganese, . 



Silica, .... 



^ Alumina, 



^ I; 



0.54 

 64.70 

 trace 



2.60 

 14.40 



1.40 

 12.40 



3.70 



1.00 



Metals. 



0.54 

 49.86 



1.78 

 10.05 

 0.977 



63.207 



.Magnesia, .... 



100.74 

 No. 5. Carbonate of lead with ferruginous gangue 

 Z. Blaney. 



Carbonate of lead, . . 43.60 



" copper. 



Oxide of iron, 



" manganese. 



Silica, 

 { Alumina, 

 iMagnesia, . 



By J. V. 



5b. 

 a 



3.30 

 15.00 



5.60 

 14.49 



9.27 



663 



Mptnls. 



36.39 

 2.10 



10.40 

 3.91 



52.80 



97.89 

 No. 6. Zinc and copper ore. The zinc and lead are chiefly 

 regarded as sulphurets, the copper chiefly carbonate, but it also 

 exists as sulphuret and oxide. J. Y. Z. Blaney. 



fac- 

 es 

 O 



101.50 



