Chap. XXXVI.] 
NAGPUR : JUNAWANI. 
971 
There is also some granular soft ore containing mica. From one part 
of this pit I collected a large piece of manganhedenbergite (page 131), 
which contained spessartite and manganese-mica ; while a band of quartz- 
ite contained both rhodonite and a rich brown pyroxene. The middle 
pit showed a large quantity of manganese- ore nodules and bands in 
crystalline limestone, while at the east end of Junawani A were several 
pits all showing the residual nodule deposit. A large quantity, nearly 
2,000 tons, of ore had been collected here, and sample 23, the analysis 
of which is given later (page 973), was taken from the ore-stacks. 
Junawani B is some 750 yards east from A, and a pit here showed 
siliceous ore in situ in the limestone. The grey limestone is composed 
of calcite, with quartz, piedmontite, and a bronze- coloured mica 
('? phlogopite), and is associated with a sericitic quartzite. 
Junawani C, situated some 1 to 1| miles further to the east, I did 
not visit. 
The Junawani ores are hence spread over a length of 1| to 2 miles. 
The nodules and bands of ore that occur in the Hmestones are usually 
Nature and quality lenticular in shape and are often composed of layers 
of the ores. Concentrically arranged parallel to the exterior 
of the nodule. These bands and nodules are sometimes folded. The 
ore itself is bright-grey finely crystalline and can be scratched with mo- 
derate ease with a knife. A specimen from the middle pit of Junawani 
A was analysed at the Imperial Institute with the following result : ^ — 
Specimen No. 1062. Per cent. 
Manganese peroxide . . . . . . . . 58'58 
Manganese protoxide . . . . . . . . 23'23 
Ferric oxide . . . . . . . . 
Alumina .......... 0"72 
Baryta 3-06 
Lime 2 15 
Magnesia 0-00 
Silica (combined) ........ .3-16 
Silica (free) ......... 1-42 
Phosphoric oxide . . . . . . . . 0"38 
Arsenic oxide ......... 0 -009 
Combined water ........ 0-04 
Moisture at 100°C 0-3G 
Carbon dioxide ......... O'OO 
99-819 
Specific gravity . . . . . . . . .4-53 
The following constituents were subsequently determined : — 
NiO, C03O4, CuO* 0 -048 
K2O 0-33 
Na20 0-32 
* Mainly nickel. 
