47 (> 
THE VOYAGE OF H.M.S. CHALLENGER. 
114. Manganese Nodules (external portions). — Station 276. 
Portion soluble in Hydrochloric \ 
Acid -78 -00 /' 
Portion insoluble in Hydrochloric I ^ 
Acid = 7 -60 /“ 
149° 30' W., 2350 fathoms (Brazier). 
Loss on ignition after drying at 230° Fahr., 
14 -40 
Copper, ..... 
good trace 
Alumina, ..... 
2-00 
Ferric oxide, .... 
. 45-00 
Calcium phosphate. 
small trace 
Manganese oxide, .... 
14-82 
Nickel, ..... 
trace 
Cobalt, ..... 
trace 
Calcium sulphate, .... 
0-99 
Calcium carbonate. 
4-30 
Magnesium carbonate, 
1-13 
Silica, ..... 
976 
Alumina, ..... 
1-10 
Ferric oxide, .... 
1-40 
Lime, ...... 
0-70 
Magnesia, ..... 
0-50 
Silica, ..... 
3-90 
100-00 
115. Manganese Nodules (internal portions). — Station 276. 
Lit. 13° 28' S., long. 149° 30' W., 2350 fathoms (Brazier). 
Portion soluble in Hydrochloric 
Acid — 72 75 
) 
Portion insoluble in Hydrochloric 
Acid-1315 
Loss on ignition after drying at 230° Fahr., 
14-10 
Copper, 
. trace 
Alumina, 
8-90 
Ferric oxide. 
. 21-00 
Calcium phosphate. 
good trace 
Manganese oxide. 
1-91 
Nickel, 
Cobalt, 
Calcium sulphate, . 
0-41 
Calcium carbonate, 
2-70 
Magnesium carbonate. 
1-53 
Silica, 
36-30 
Alumina, 
1-80 
Ferric oxide. 
2-00 
Lime, 
0-85 
Magnesia, 
0-60 
Silica, 
8-00 
100-00 
I 
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V 
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