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MANGANESE DEPOSITS OF INDIA: MINERALOGY. f PaRT I : 
its characters. The only specific gravity value available is the one 
calculated from the analysis of the opalized garnet-felspar-rock given 
on page 257. The value so calculated is 3-76, and is intermediate 
between the value given by Dana for grossularite, namely 3"55 to 
3"6fi, and that given for andradite, namely 3'8 to 3'9. 
At Nautan-Barampur, also in the Ganjam district, there is an 
occurrence of a rock composed of rhodonite, a manganese-garnet, and 
blue apatite. The garnet is sherry-coloured and very similar in 
appearance to that of Boirani. It has not been analysed, so that 
it cannot yet be stated if this is another occurrence of grandite. 
Aplome. 
This is a name given by Haiiy to a variety of andradite that had 
its dodecahedraljfaces striated parallel to the shorter diagonal of the 
rhombs instead of, as is customary when striations are present, the 
longer diagonal. The one analysis given by Dana of a specimen from 
Alfcenau happens'to be manganiferous, containing 3*02% of MnO ; but 
it is apparently not known if these striations necessarily indicate the 
presence of manganese ; for the aplome of the otht-r localities does not 
seem to have been analysed. The only record of aplome in India is con- 
tained in E. Balfour's catalogue of the Eev. Mr. Mazzy's Madura 
collection of minerals^, and in J. H. Nelson's more detailed account 
of the same 2. The latter mentions the occurrence of aplome near So- 
lavandan, about 12 miles west of Madura, and near Melavalavu, about 
20 miles N.-E. of Madura. This record is to be considered doubtful 
in the absence of any account of how tht mineral was identified. 
Calderite. 
In 1850 H. Piddington published a paper in the Journal of the Asia- 
^ tic Society of Bmgal, Vol. XIX, pp. 145 to 148, 
Occurrence. • i i 4 /-v ^ ^ ■ > ff > 
entitled On Calderite, an undescribed Sihceo- 
Iron-and-Manganese-Rock, from the district of Burdwan '. From 
this paper it appears that he obtained specimens of the rock 
to which he has given this name from ' Kut-Kumsandy 12 
miles N.-W. of Hazaribagh,' as well as from the Burdwan district ; 
But the particular part of the latter district from which the specimens 
1 Catal., Govt. Central Mu.s., Madras, p. 3, (1855). 
2 ' The Madura Country ', pp. 14, 27, (1868). 
