102 MIDDLKMISS : THE GEOLOGY OF IDAR STATE. 



frical Survey laboratory, giving a small un weighed quantity of 

 silica, together with— 



Fe«0« etc 4-80 



CaOOi 51*84 



MgC0 3 43 " 31 



99 85 



It is of a pale creamy -brown colour and is also fairly massive. There 

 is a verv minute amount of a canary yellow mineral in £$j which 

 has not been determined. 



The calcite-tremolite rock, 4 2 - 4 (12416), at the top of the 

 lowest 60 feet in the section, is a coarse crystalline limestone with 

 pale to dark-green, elongated blades of actinolite, in radiating 

 and felted groups. No. *& 6 (12417) is a similar, paler rock from 

 the northern end of the hollow, the tremolite being in radiating 



tufts. 



This uppermost bed, with some modification, can be traced 

 round the northern end of the ellipse at inter* 

 Yoinlets of the green y ^ w here it appears as dark green crags 

 just above the cup-shaped hollow in the hills. 

 The tremolite or actinolite, besides being found with calcite as a 

 definite layer, also (it is important to note) wanders away and 

 pervades the quartzite above in irregular veins giving it a dis- 

 tinctly green tinge (specimen No. / 3 9 - 1} 12421). 



At other places round the steatite ellipse local, imperfect; 



exposures show the creamy, coarsely crys- 



Other junction talline dolomite, and (as " at the low gap 



SCCtlOllS. 1-1 i r i- -rs -nr ' 



about g mile south ol the path from Dev Mori 



to Kundol) the bright green amphibole and amphi bole-quartz rock — 



£% (12422) and '^ (12423, PI. 13, fig. 2)— forming a junction rock 



with the quartzite series on each side of the steatite outcrops. 



The southern end of the exposures of tliie magnesian series 



narrows down to a very small thickness, and 



Magnesian rocks ft cuts the cross-stream going to Odha at a 



thinning away to the • 



south, point which looks as it it were about to leave 



the Delhi Quartzite hill-mass altogether. 



Before describing the other occurrences of magnesias rocks, it 



may be as well to draw attention to the fact 



Irregular horizon of ^ t the sections just described, as well as 



the magnesian rocks. •> ' 



that at Khercha, seem to indicate that if this 



