REPORT ON THE DEEP-SEA DEPOSITS. 
465 
97. Manganese Nodule. — Station 3. 
Lat. 25° 45' N., long. 20° 12' W., 1525 fathoms (Brazier). 
Portion 
soluble in Hydrochloric 
Acid = 78 -38 
}- 
Portion insoluble in Hydrocliloric 
Acid = 3 ‘32 
Loss on ignition after drying at 230° Fahr., 
. 18-30 
' Copper, 
small trace 
Alumina, 
1-70 
Ferric oxide. 
. 40-71 
Calcium phosphate, 
0-34 
Manganese oxide, . 
. 22-80 
Nickel, 
mere trace 
Cobalt, 
Calcium sulphate, . 
1-17 
Calcium carbonate, . 
5-15 
Magnesium carbonate, 
1-51 
L Silica, 
5-00 
Alumina, 
0-55 
Ferric oxide. 
0-68 
Lime, 
0-25 
Magnesia, . 
0-18 
. Silica, 
1-66 
100-00 
Note. — Small mass of a brown and blackish colour, no definite shape, but appeared as if broken from some larger mass. 
97a. Coeal {Pleurocorallium johnsoni) attached to the preceding nodule. — Station 3. 
Lat. 25° 45' N., long. 20° 12' W., 1525 fathoms (Anderson), 
Water, 
Calcium carbonate, 
Magnesium carbonate, 
Calcium phosphate, ) 
Ferric oxide, i 
Silica, 
Insoluble residue. 
0-30 
93-39 
6-00 
0-10 
trace 
0-05 
98. Manganese Nodule. — Station 16. 
99-84 
Lat. 20° 39' N., long. 50° 33' W., 2435 fathoms (Brazier). 
Portion soluble in Hydrochloric ) 
Acid = 82 -73 1 
Acid = 3 "64 
Loss on ignition after drying at 230° Fahr. , 
. 13-63 
( Copper, 
small trace 
Alumina, 
2-95 
Ferric oxide. 
. 36-08 
Calcium phosphate. 
good trace 
Manganese oxide, . 
. 29-32 
- Nickel, , 
. trace 
Cobalt, 
Calcium sulphate, . 
1-05 
Calcium carbonate, . 
1-96 
Magnesium carbonate. 
4-32 
-Silica, 
7-05 
( Alumina, -j 
1 Ferric oxide, i 
4 Lime, }- 
3-64 
1 Magnesia, 
L Silica, J 
100-00 
oth, grey on the outside, yellowish inside, weight only 44 grai 
(deep-sea deposits chall. exp. — 1891.) 
61 
