MANGANESE DEPOSITS OF INDIA. 
but it cannot be regarded as certain that this is really a distinct 
mineral until the formula has been confirmed by further analytical 
work. The mineral was found at Beldongri, Nagpur district, Central 
Provinces ; and what looks like the same substance occurs at Char- 
gaou in the same district. 
Wad. — The term wad is used to designate all the non-crystalline 
and indefinite mixtures of manganese and other oxides that do not 
correspond to a defimite formula, such as that of psilomelane. 
[CHAPTER v.] 
Silicates : Pyroxenes and Amphiboles. 
Blanfordite. — The original account of this mineral is given in 
the Transactions of ihe Mining and Geoloijical Institute of India ^ 
Vol. I, p. 78, (1906). It is a manganiferous pyro:s.ene of the follow- 
ing striking pleochroism : — 
a = rose -pink, 
b = bluish hlac, 
c = sky-blue. 
The foregoing corresponds to the mineral found at the original locality, 
Kacharwahi, Nagpur district, Central Provinces. Similar but less 
marked pleochroism is seen in pyroxenes from Ramdongri in the 
Central Provinces, Kajlidongri in Central India, and Narukot in 
Bombay. 
Notes on mangan-hedenbergiie and minerals that may be schefferite 
and urbanite are also given. 
Rhodonite. — The occurrence, characters, altemtion, and use of this 
mineral are noticed. 
Of manganese-amphiboks three varieties are noticed, namely one 
that may be dannemorite, and two new varieties, winchiie and juddite. 
Winchite. — The original account is given in Rec. G. S. I., XXXI, 
p. 23.5, (lOOi). The mineral is blue in hand-specimen and is distin- 
guished by its zoned structure and the following pleochroism : — 
a = pinkish lilac, 
b = pale lilac, 
c — blue. 
