ClIAP. XXXVT.l NAGPUE: JUNAWANI. 
973 
The interesting features of this analysis are tlic liigh percentage 
of baryta and the donionstration of the presence of copper, lead, zinc, 
nickel, cobalt, and arsenic. As the silica has not been (lividcnl into 
' combined ' and ' free ', it is not possible to calculate the mineral com- 
position of the sample. But the high proportion of manganese dioxi'Je 
and baryta indicate that this ore contains an even larger proportion 
of hoUandite or psilomelane than the picked specimen (1002) of which 
the analysis is given above. 
The sample (No. 23) taken by me from the loose-ore beds of Juna- 
wilni A (see page 5)71) was of the same fine-grained crystalline ore 
and was analysed at the Imperial Institute with the following result : — 
Sample No. 23. 
Manganese peroxide 
Manganese protoxide 
Ferric oxide 
Silica (conibinedl 
Silica (free) 
Phosiilioric oxide 
Moisture at 100°C. 
Carbon dioxide . 
Per cent. 
51 -85 
26-81 
4 00 
5-55 
1 -00 
012 
0-23 
0-10 
This indicates that the ore is about half braunite and half psilomelane 
or hollandite. The above analysis is equivalent to : — 
Mangane.se 
Iron 
Silica 
Phosphorus 
Moisture . 
53-59 
3-28 
G-55 
0-05 
0-23 
Two samples were taken by Mr. Goodchild from the same rich patch 
of nodules and loose fragments. Sample E represents ore, mostly small, 
excavated and selected in Mr. Goodchild 's presence, wliile sample F 
' was taken from a pile of 50 tons of re-selected ore from which still further 
rejections of siliceous pieces would be made on loading into carts '. 
Manganese . 
Iron . 
Silica 
Phosphorus 
51-12 
3-13 
10-30 
0-045 
52-01 
3-61 
7-20 
0-048 
It will be seen from the analyses given above that the quality of the 
ores in these nodule deposits is moderately good, the phosphorus es- 
pecially being very low. There is no doubt that from this particular 
part of the deposit a few thousand tons of merchantable ore could be 
extracted. 
