350 Analysis of Ores from North Carolina. 
No. 3. Copper and zine ore, by William M. Uhler. 
taining both sulphuret and oxide-of copper. 
vt aba of lead, ~ . ; 0.81 
eed : 2 "64.27 
23.86 
pe Oxide pr iron, (raiy sulphuret,) 8.32 
bo) Silica, sili 10.20 
e Alumina, se ES ‘ 1.96 
5 Unlagnesia, ; : ; . erie 
Black, con- 
Metals, 
“No. 4: Yellowish (piginous sects “of lead, byt v. Z. 
Bigney-* ma : 
‘ Silver, i Sa ae 
~ Carbonate as ase re 64.70 
ioe aan of fet (carbonate oy 2 2.60 
Oxide of’ iron, 4.40 
< Silica, : Bee hall S Wogalg 12.40 
ass 2 
" Magnesia, 
manganese, BS Grik er 
ANQIDUDR Ss nn enn tlie ch ne es 
0 Ss. 
is 46 ; 
1.78 
10.05 
OOF se 
———_ 
63.207, Se Oe 
100.74 % 
No. 5: Secsagee. of lead with ferruginous oR un JY. 
Z. Blaney. 
Carbonate ab lead, a Dame ae 43.60 5 . 
‘Oxide of iron a, . 
$| « — manganese, . 5.60 
biti or 14.49 
S| Atoming wm Sar 
ote? ee et 9k: ee 5 > OSD 
52.80 
97.89 
“No. 6. Zina, and cones om: “The zinc and Se 
regarded. as sulphurets, the son ae sais te bat A ue am 
exists as solphineet, and oxide. . V. Z. Blaney. 
