Chap. II. ] 
INDIAN MANGANESE MINERALS, 
35 
Alurgite ? -v 
Other Mn micas ( -Manganese- micas. 
Manganchlorite ? j 
Ottrelite. 
Titano-silicates — 
Greenovite 
Tscheft'kinite. 
Niobates and tentalates — 
Columbite. 
Phosphates — 
Manganapatite. 
Triphte. 
A soda-manganese pliosphate. 
Tungstates— 
Wolframite. 
For the non-manganiferous minerals associated with the manganese 
ores of India see the lists on pages 323 to 325. Some of these are, 
however, of sufficient interest to be considered here. The following 
is a list of such minerals : — 
Table 4. 
List of certain minerals associated with the Indian manganese-ore deposits. 
Graphite. 
Chalcopyrite 
Pyrite. 
Pyrrhotite. 
Halite. 
Rose quartz. 
Amethyst. 
Chalcedony and chert. 
Opal. 
Hematite. 
Magnetite. 
Marti te. 
Limonite. 
Gibbsite. 
Microcline. 
Sapphirine. 
Lithomarge and Kaolin. 
Arsenates 
Barytes. 
On comparing the list of Indian manganese minerals with the 
list of known minerals containing this element it will be seen that in 
some groups the manganese minerals are adequately represented in India, 
whilst in other groups there are very few or no Indian representatives. 
The adequately represented groups are the oxides, manganates, 
carbonates, silicates, niobates, and tungstates ;. the sulphides, chlorides, 
arsenates, antimonates, borates, and sulphates are not represented at 
all, and the titano-silicates and phosphates only very inadequately. It is 
in the phosphates, arsenates, and antimonates, that the deficiency of 
the Indian list is most marked, for, of the total number of 156 
minerals given in the list on pages 23 to 33, 33, or nearly a quarter 
of the whole number, belong to these three allied groups. Considering, 
