CHAPTER TV. 
MimRAWGrY— continued. 
Manganates and Carbonates. 
Hollcindite — P.silomslan? — Beldongrite — -Wad— Ankerite — RhoJochrosito. 
Hollandite 
This mineral was first brought to my notice by Mr. H. J. Winch at tha 
time of my visit to the Kajlidongri deposit. On examination, I found 
that the mineral was probably a new one very similar to one I had found 
at Sitapar in the Chhindwara district. Mr. Winch kindly made a 
quantitative analysis of it showing that it was a manganate of barium, 
manganese, and iron.i Having decided that it was a new mineral i 
called it hollandite after Dr. T. H. Holland, Director of the Geological 
Survey of India, and published a preliminary description of it in 
the Transactions of the Mining and Geological Institute of India, Vol. I, 
page 76, (1906). Since then I have not been able to do any further work 
on the mineral and thus settle various points that need clearing up^ 
such as its crystallographic system. 
At KajUdongri the mineral occurs in che crystalline form in quartz 
veins traversing the manganese-ore deposit. It also 
Occurrence. • - .T. r 
sometimes passes into the manganese-ore of the 
ore-body, which is mainly psilomelane in the parts of the deposit 
where the hollandite occurs. What is in all probability a variety 
of the same mineral is found at Sitapar in the Chhindwara district, 
where it occurs as a constituent of the ores, being associated with 
sitaparite, bramiite, pyrolusite, manganchlorite ?, and an arsenate ; 
Sitapar is the only locality at which I have found arsenates be- 
sides Kajlidongri. At the latter place the arsenates are not directly 
associated with the hollandite, so that this occu rence of arsenates and 
manganates at each of these places may be a purely fortuitous one. 
Crystalline manganates occar at a few other localities also, associat- 
ed with the manganese-ores. They have not been definitely isolated 
and analysed, so that it is not certain how closely they approximate 
1 T. H. Holland, KiC Gi'ol. Surv. hid., XXXIII, page 98, (1900). 
