KEPORT ON THE DEEP-SEA DEPOSITS. 
479 
120. Manganese Nodules. — Station 285. 
Lat. 32° 36' S., long. 137° 43' W., 2375 fathoms (Brazier). 
Portion soluble in Hydrochloric ) 
Acid ^76 ’20 ) 
Acid = 10 ’90 
Loss on ignition after drying at 230° Fahr., 
. 12-90 
r Copper, ..... 
good trace 
Alumina, ..... 
2-50 
Ferric oxide, .... 
. 24-63 
Calcium phosphate. 
good trace 
Manganese oxide, .... 
. 36-54 
Nickel, ..... 
good trace 
Cobalt, ..... 
trace 
Calcium sulphate, .... 
0-34 
Calcium carbonate, .... 
1-86 
Magnesium carbonate. 
1-13 
Silica, ..... 
9-20 
Alumina, ..... 
1-94 
Ferric oxide, .... 
0-72 
Lime, ..... 
0-56 
Magnesia, ..... 
0-10 
Silica, ..... 
7-58 
100-00 
Note. — Small nodules, average weight 90 grains, dark brown colour outside, yellowish grey inside. Several 
taken as a whole for analysis. 
121. Manganese Nodules. — Station 285. 
Lat. 32° 36' S., long. 137° 43' W., 2375 fathoms (Brazier). 
Portion soluble in Hydrochloric 
Acid = 69 '22 
Portion insoluble in Hydrochloric 
Acid = 21 -53 
Loss on ignition after drying at 230° Fahr., 
9-25 
' Copper, 
. trace 
Alumina, 
7-42 
Ferric oxide. 
11-64 
Calcium phosphate. 
7-15 
= - 
Manganese oxide, 
. 24-71 
Calcium sulphate, . 
0-73 
Calcium carbonate, . 
3-59 
Magnesium carbonate. 
1-30 
Silica, 
12-68 
r Alumina, 
3-80 
Ferric oxide. 
2-20 
= ■! 
Lime, 
0-38 
1 
Magnesia, . 
0-09 
Silica, 
. 
. 15-06 
100 '00 
