1100 MANGANESE DEPOSITS OF INDIA : DESCRIPTIVE, [ PaRT IV : 
Mr. Caplen has furnished me with the following figures : — 
Range of analysis. 
1 
Average analysis 
at present day. 
Ferruginous 
manganesc-ore. 
Manganese . 
40 to 50 
42-41 
35-75 
Iron .... 
7 to 15 
12-90 
1689 
Silica .... 
4 to 6 
3-85 
5-95 
Phosphorus . 
0-3 to 0-5 
0-375 
0-439 
Insoluble 
4-48 
6-90 
Lead-like psilomelane. 
Amongst the varieties of psilomelane is one that has the colour 
and lustre of metallic lead. It is apparently 
homogeneous and breaks with a conchoidal 
fracture. It is similar to that found at Garbham (see page 1085). A 
piece of this lead-like psilomelane was analysed by Messrs. J. & H. S. 
Pattinson with the result given in full on page 100. The constituents 
of commercial importance are shown below : — 
Specimen No. A. 372. 
Manganese 
Iron 
Silica (total) 
Phosphorus 
Moisture . 
The output from this deposit is given below : 
49-18 
4-00 
0-45 
0-346 
2-05 
1899 
1906 
1907 
Ferruginous 
manganese-orcs. 
Total. 
7,702 
2,025 
12,072 
6,401 
7,929 
15. Aitemvalsa (Itamavalsa). 
This deposit I did not visit, but from what I was told it must Ue 
about 4 miles N. of Chipurupalli Railway Station. It was once opened 
up by Messrs. Gordon, Woodroffe & Co., and Kovoori Basivireddi and a 
considerable quantity of ore was sent to Chipurupalli Railway Station., 
