084 MANGANESE DEPOSITS OF INDIA : DESCPIPtlVE. [ PaRT IV : 
The following analyses by Dr. Schulten of Calcutta, kindly supplied 
by Mr. Ghose, are the only ones of Goa ores I have : — 
Average Samples. 
Fantjswadi. 
Kolambi. 
Morlem. 
No. 1. 
t 
No. 2. 
Manganese .... 
Iron .... 
Siliceous matter 
Phosphorus .... 
47-65 
10-63 
4-25 
0-150 
49-45 
8-59 
6-47 
0-151 
54-38 
3-62 
1-41 
0-156 
42-70 
17 08 
2-27 
0-167 
Picked bad specimens of laleritic manganese-ore. 
Kulaa 
No. 7. 
Faiuswali 
No. 8. 
Servona. 
No. 1. 
No. 3. 
Manganese .... 
Iron . . , . . 
Siliceous matter . . 
Phosphorus . • „ . 
38-39 
20-58 
2-24 
0-139 
21-32 
39-53 
2-70 
0-167 
38-57 
20-70 
216 
0-195 
37-52 
25-11 
2-09 
0-212 
As far as I can judge from the appearance of the Goa ores, the 
manganese is not hkely to be very high, its place often being taken by 
a considerable amount of iron. In fact I should think that the Goa 
ores are practically all third grade, and below ; I have not seen any 
that looked as if they ran above 47% manganese, i.e., were second grade. 
On account of their mode of origin, these ores are liable to run high in 
silica if the cleaning be not carefully carried out. This silica is in the 
form of quartz, and if the ores were carefully cleaned the sihca percent- 
age could often be reduced to very small amounts, though probably at 
the expense of a considerable loss of ore. Considering the resemblance 
of these ores in every respect to those of Mysore, one would expect 
the phosphorus to be low ; but the foregoing analyses indicate the 
contrary. 
