98 GEOLOGY OF TRICiriXOPOLYj &C. [ChAP. IV. 2. 



vinusual aspect, Leing- harder and more compact than usual^ and having a 

 decided resemblance to the magnesite itself^ though quite distinctly a 

 true kunkur. A few hundred yards off across a small water-course this 

 character suddenly ceases, and the common truly-tufaceous chai'acter of 

 the kunkur re-appears. 



The next magnesite-bearing tract we have to notice is one of small 



extent, situated some 10 miles east-south-east from 



the foregoing, about a mile south by east of the 



\nllage of Powtrum (Pouthrum of map) . The magnesite veins, which are 



very small here, run along the general line of strike of the highly horn- 



blendic rocks of the neighbourhood, namely, west by south, east by north. 



They extend for about a mile or a mile and a quarter along the road 



to Jembumudda, but are confined to a narrow space, probably not more 



than 300 yards in width at the utmost, and of this even a great part is 



hidden by the soil. 



The veins occupy the crest of a slightly elevated but well marked 

 ridge commanding a good view of the country. Tlie calcedonic coat- 

 ings and veinings of the magnesite and impure incrustations between 

 the veins are not quite so frequent in this loeahty as at jNIootoonaicken- 

 putty, but more so than is the case at the " Chalk Hills. •'^ 



Proceeding about 6 miles further north-eastward, another rmall 

 tract of ground, covered with more or less mao-ne- 

 ^^^^^ ''' sian travertin, is met with about one mile south 



of Cajareputty, and a little to the east of the road between that village 

 and Moorputty. The magnesite veins which occur on a low broad ridge 

 less than half a mile in length from west to east, are very small, and do 

 not protrude above the general level of the mass, as in the first three cases, 

 but the blackish burnt-up looking tufa and dark coloured incrustation 

 occur abundantly on the surface of the ridge, which consists of an evi- 

 dently much altered rock, having, on the whole, a strong resemblance to 

 coarse serpentine. A peculiar feature presented by the magnesite veins 

 (330.) 



