482 
THE VOYAGE OF H.M.S. CHALLENGER. 
126. ^Manganese Nodules. — Station 286. 
Portion soluble in H 3 ’drochloric \ _ 
Acid — 78 '30 / 
Portion insoluble in Hydrochloric ) ^ 
Acid = 13-00 
133° 22' W., 2335 fathoms (Brazier). 
Loss on ignition after drying at 230° Fahr., 
8-70 
Copper, ..... 
good trace 
Alumina, ..... 
2-50 
Ferric oxide, 
. 24-00 
Calcium phosphate. 
0-70 
Manganese oxide, .... 
. 27-40 
Nickel, ..... 
good trace 
Cobalt, ..... 
. trace 
Calcium sulphate, .... 
0-87 
Calcium carbonate, .... 
4-37 
Magnesium carbonate. 
1-36 
Silica, ..... 
17-10 
Alumina, ..... 
1-90 
Ferric oxide, .... 
1-20 
Lime, . ... 
0-84 
Magnesia, ..... 
0-15 
Silica, ..... 
8-91 
100-00 
Note. — S everal small brittle nodules taken as a whole. 
1 
t 
127. Manganese Nodules (internal portions). — Station 286. 
Portion soluble in Hydrochloric 1 _ 
Acid -65 -60 /“ 
Portion insoluble in Hydrochloric 1 _ 
Acid -18-90 /” 
133° 22' W., 2335 fathoms (Brazier). 
Loss on ignition after drying at 230° Fahr., 
15-50 
Copper, 
good trace 
Alumina, 
2-31 
Ferric oxide. 
. 21 -87 
Calcium phosphate. 
0-69 
Manganese oxide. 
. 22-79 
Nickel, 
good trace 
Cobalt, 
trace 
Calcium sul]>hate 
0-51 
Calcium carbonate, . 
2-65 
Magnesium carbonate. 
0-68 
Silica, 
. 14-10 
Alumina, 
1-60 
Ferric oxide. 
2-20 
Lime, 
0-50 
Magnesia, 
0-30 
Silica, 
. 14-30 
100-00 
I 
Note. — T wo small hard no<lu1es, coated with a brown shell (which was removed). They were black throughout, except 
small white centre in one, and a small tooth or portion of a tooth in the other. 
