334 
MANGANESE DEPOSITS OF INDIA : GEOLOGY. [PAUT ll : 
At the Kajlidongri min ^ in Jhabua there is a series of rods, associated 
with the manganese-ores, that is characterized by the presence of the 
lavender or blue amphibole to which the name winchite has been given 
(see page 149). These rocks have probably resulted from the 
metamorphism of a series of sediments characterized by the presence 
of large quantities of lime, magnesia, and manganese-oxides, in addit on 
to th? ordinary sand and clay. The minerals contained in the rock 
thus formed : re the following : — Winchite, braunite, calcite, and 
quartz, with less frequently apatite, blanfordite, plagioclase, and 
crimson mica. Some 10 diflerent combinations of these minerals have 
been found, but the most important are the following : — 
List of winchite-bearing rocks. 
Winchite-schist, composed of about equal proportions of winchite, braunite, calcite, 
and quartz. 
Blanfordite-winchite-schist, composed of the foregoing minerals with blanfordite 
in addition. 
Winchite-quartzite. 
Blanfordite- wiuchite-quartzite. 
Banded rock of winchite, blanfordite, braunite, felspar, quartz, apatite, calcite, and 
crimson mica. 
As has been mentioned on a previous page, various interesting rocks 
are often found at the peiiphery of th masses of manganiferou Tocks 
and are formed either by an interaction between the manganiferous 
sediments and the immediately under- or over-lying non-manganiferous 
sediments ; or, and more probably, by the direct metamorphism of these 
underlying or overlying sediments, which were not sufficiently manga- 
niferous to give rise to rocks of the gondite series or to ores, but which yet 
contained sufficient manganese to give rise on metamorphism to tm- 
usual rocks. Of such rocks the following deserve notice : — 
List of manganiferous rocks forming the ' country'' of the gondite series. 
Manganmagnetite-gneiss of Kandri and Mansar. 
Spessartite-quartzite of Kandri and Mansar. 
Manganiferous mica-schist containing a crimson mica (bia.xial), a brown mica 
(uniaxial), and quartz, at Sitapathiir. 
Hematite (manganiferous)-quartz rock at Ramrania. 
Ottrelite-muscovitc-schist at Sitasaongi and Balaghat. 
Piedmontite-phyllite at Kajlidongri 
Sandy-argillaceous rock containing winchite at Kajlidongri. 
In addition to the rocks characterized by a notable proportion of man- 
ganese, there is a great variety of rocks forming the actual ' country ' 
