92 MANGANESE DEPOSITS OF INDIA : MINERALOGY. [ PaRT I : 
Of the hollandite of otter localities tlie only one of whicli an analy- 
sis is available is the massive variety of the Balaghat mine. On pages 
797 and 971, however, analyses are given of picked pieces of 
ore consisting in the main of mixtures of braunite and a crystalline 
manganate. These analyses are recalculated into terms of their mineral 
composition, showing the manganates as composed of a series of man- 
ganates of the various base radicles of the mineral. The figures for the 
composition of the manganate as given on those pages I have con- 
verted to a total of 100, so that from these analyses of composite speci- 
mens it has been found possible to extract analyses of the crystalline 
manganate or hollandite. 
