REPOKT ON THE DEEP-SEA DEPOSITS. 
47:3 
108. Manganese Nodules. — Station 256. 
Lat. 30° 22' N., long. 154° 56' W., 2950 fathoms (Brazier). 
Portion 
soluble in Hydrochloric 
Acid = 77 '57 
Portion insoluble in Hydrochloric 
Acid = ll-13 
} 
Loss on ignition after drying at 230° Fahr. , 
11-30 
' Copper, 
large trace 
Alumina, 
2-30 
Ferric oxide. 
. 18-80 
Calcium phosphate. 
good trace 
Manganese oxide. 
39-57 
Nickel, 
good trace 
Cobalt, 
trace 
Calcium sulphate, . 
0-58 
Calcium carbonate, . 
2-58 
Magnesium carbonate. 
4-54 
Silica, 
9-20 
'Alumina, 
1-40 
1 Ferric oxide. 
0-80 
Lime, 
0-33 
1 Magnesia, 
good trace 
L Silica, 
8-60 
100-00 
Note. — Several small nodules, irregular in shape, average weight 200 grains, light grey colour outside, blackish grey inside, 
except centre, which was also of a light gi’ey colour and very friable. 
109. Manganese Nodule. — Station 264. 
Lat. 14° 19' N., long. 152° 37' W., 3000 fathoms (Brazier). 
Portion soluble in Hydrochloric 
Acid = 83 '92 
} 
Portion insoluble in Hydrochloric 
Acid = 7 -18 
Loss on ignition after drying at 230° Fahr., 
Copper, ..... 
Alumina, . . . . . 
Ferric oxide, .... 
Calcium phosphate. 
Manganese oxide, .... 
- Nickel, 
Cobalt, . . . . . 
Calcium sulphate, . . . . 
Calcium carbonate. 
Magnesium carbonate, 
'Silica, . . . . . 
('Alumina, . . . . . 
Ferric oxide, . . . . 
Lime, . . . . . 
Magnesia, . . . . . 
(silica, . ... . 
8-90 
large trace 
2 '65 
. 21-38 
trace 
. 29-09 
good trace 
trace 
0-62 
2- 58 
3- 40 
. 24-20 
0-60 
1-70 
0-45 
0-33 
4- 10 
100-00 
rough, a few brown particles attached to its surface. 
Note. — Peculiar grey material, 
(deep-sea deposits chall. exp. — 1891.) 
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