36 
MANGANESE DEPOSITS OF INDIA t MINEKALOGY. [ PaRT 1 ! 
however, that three arsenates, which do not contain manganese, however, 
and one manganesian phosphate apart from manganapatite, have 
been foimd associated with the Indian deposits, it may fairly be expect- 
ed that future investigation will lead to the discovery of arsenates 
containing manganese, and of a further number of phosphates. 
I now propose to give a short account of each of the minerals given 
in the foregoing lists of Indian minerals. The notes here given are 
not intended to be exhaustive, but simply to put on record such facts 
as have been ascertained about the Indian manganese minerals. 
Many of the identifications are only provisional requiring the test of 
complete chemical analysis to confirm them. The result of such 
analysis will doubtless be to show that many of the minerals distinguished 
with a query mark in the above list, are not identical with the mineral 
mentioned, but are closely allied, showing small differences owing to 
isomorphous replacement of one constituent by another. Moreover, 
it will be noticed that many of the names given in the list are new to 
science. They are only a few of the many new 
New species and . , . . . i ,i . 
varieties. species and varieties of manganese minerals tnat 
in all probability exist in the Indian manganese-ore 
deposits. The following is a list of these new species and varieties : — 
Vif denburgite Sitparite Hollandile 
Beldongrite Blnnfordito Wincliits 
With one, and perhaps all, of the three arsenates found. Some 
of the manganese- micas will in all probability be found to be new varie- 
ties, whilst the soda-manganese phosphate is probably a new species. 
Several other minerals that are probably new, have been noticed in the 
course of the examination of the specimens collected in the Indian 
manganese deposits ; but they are not mentioned here as their charac- 
ters have not been sufficiently investigated for anything accurate to be 
stated about them. 
It has not yet been found possible to examine carefully some of 
the well-known minerals like rhodonite and pyrolusite and give figures 
for their physical characters, such as specific gravity and hardness, based 
on determinations made on Indian material. Consequently in the case 
of the more important and commonly occurring minerils, which it is 
of importance that all engaged in mining manganese-ore should be 
able to identify, I have taken the figures required from Dana's System 
of Mineralogy ; and when reference is made to this work it is always 
to the 6th edition, unless otherwise stated. 
