346 
MANGA>rESE DEPOSITS OF INDIA : GEOLOGY. 
[Part II : 
Apatiie-felspar-spessartite-roch with mica : — Satak I. 
Orthocfase-amphibole-rhodonite-gonditewith rhodochrostte (?) ; — ParsionL 
Rhodonite- qiiartz-roch : — Guguldoho. 
Rhodonite-rock: — Asalpani, Wagora, Guguldoho, Manegaon, Panchala, Risara, Sita- 
gondi. 
Rhodonite-rock with magnetite, speasartite, and manganese-mica : — Eamdongri. 
Barytes-spesmrtiie-rhodoniie-rock : — Ghoti. 
Barytes-spessartite-rhodonite-rock with a rnanganesian phosphate : — Cbargaon. 
Of the associated rocks localities may be given for the following less 
common types : — 
Pyroxmic quarlzites : — Beldongri, Junawani, Waregaon. 
Spe-isartiferoiis quartzites : — Chiklila I.Kandri. Kodegaon, Mansar Extension.Parsoda 
yianganijerous micaceous schists : — Kacharwahi. 
Hematite (manganiferous)-quariz-rock : — Ramrama. 
3Iangan{ferous gneiss containing manganmagnetite : — Kandri, Maasar. 
Manganese-mica-quartz- schist : — Sitapathur. 
Ottrelite-mica-schist .— Balaghat, Sitasaongi. 
Hematite- quarizite : — Thirori, Mansar Extension. 
Martite-quartzite : — Hatora. 
yiagneiite-muscovHe-q uartz-schist : — Hatora. 
Bornblendic quartz- pyroxene-gneiss : — SukIL 
Sapphirine(':)-enstatite-quartziie : — Chikhla I. 
Since it has been possible to assign the rocks and ores of the gondite 
Areas to prospect series to a definite system, namely the Dharwars, 
rences*oA^he gondu'e should be possible to indicate in what areas future 
series. prospecting should be carried out for the purpose 
of finding further occurrences of these rocks. In the first place, since 
the occurrences of this series that have been foimd in the less meta- 
morphosed type of the Dharwars, known in the Central Provinces as the 
Chilpi Ghat Series, have all been found to occur near what seems to be the 
base of the series, the attention of prospectors might well be directed to 
the boundaries of this formation as mapped in the southern parts of the 
Balaghat district and the northern parts of the Bhandara district (see 
Plate 43). It does not, of course, follow that such work would be suc- 
cessful ; in the first place because the areas indicated may have been 
outside the Umits within which manganiferous sediments were deposited ; 
and in the second place because any occurrences oi the rocks of this 
series might all be in the condition of unaltered manganese-silicate-rocks, 
such as gondite and rhodonite-rock, and consequently not worth working 
as a source of manganese imder present conditions of metallurgical treat- 
ment. A reference to the map of the Nagpur-Balaghat area will also 
show that the extreme northern portions of the Nagpur district, namely 
those parts lying to the north of ChorbaoU and Junawani, and the ex- 
treme southern portions of the Seoni district, hang between the Bench 
river on the west and Katangi in the Balaghat district on the east, together 
