104 BflDDLEMISS: THE GF0L00Y OF 1DAR STATE. 



extension, of the band or deposit into the quartzite of the neighbour- 

 ing Delhi Quartzite ridges. 



The third occurrence covers a rather extensive tract which has 

 the form of a knee-shaped bend, some 4 or 5 



(3) i The Kokapur- milcs \ Q m a follow in the Dellii Quartzite 

 \ artha outcrop. v . . 



hill-mass between Kokapur and Vartha, this 



occurrence being likewise connected up by more or less continuous 

 ridges of Delhi Quartzite along the line of strike with the Ghanta 

 and Dev Mori-Kundol outcrops already described. In addition to 

 magnesian rocks, including pure serpentine rock, steatite, dolomite 

 and some few magnesite veins, there is also associated with them a 

 considerable amount of siliceous material as secondary quartz and 

 chalcedony (gangue), ramifying as drusy structure through the 

 quartzite in a plexus of veins, and which, together with some poorly 

 exposed compact ores of iron and manganese, constitute a defi- 

 nitely mineralised band. Although the tract here exposed is of 

 larger extent than that between Dev Mori and Kundol, it is equally 

 imperfectly exposed owing to alluvium and quartzite debris, and 

 has not as yet (1916) been opened up by any digging. It starts 

 about 1 £ miles due south of Dedhalia town, as a narrow band between 

 quartzite ridges. This expands to a wider area, some | mile across 

 in the actual angle of the knee-bend, whence it follows, with a 

 moderate width of | mile, to Vartha. 



About due west of Kokapur, at a locality reached from the 

 Magnesite, steatite latter village through a gap in the bordering 

 and green amphi- quartzite ridge, the magnesian rocks, imper- 

 fectly exposed amongst alluvium and 

 kankar, are chiefly impure magnesite, 4 ? 3 °2, dolomite, 4 - 3 9 3 (12424), 

 talc, / 3 9 4 , and the green amphibole rock, / 3 9 5 (12425, PI. 13, fig. 3) 

 next the quartzite as near Kundol. 



In the wider part of the actual knee-bend I found on the northern 

 and south-eastern edges, (almost hidden 

 by alluvium quartzite debris, and siliceous 

 and dolomitic rock) isolated but in situ, masses of very tough, dark, 

 serpentine rock, £&— ^ (12426, 12427. PI. 13, fig. 4) having a very 

 d yke-like ultrabasic igneous aspect. This, however, under the micro- 

 scope, shows simply pure serpentine and iron-ores (chromite ?), the latter 

 in small veins and aggregates, and without any trace of any original 

 olivine or other mineral from which the serpentine might have 



