PAINKANDA SECTIONS. 



93 



Fig. 13. Gneiss gorge at Bampa camping ground. 



The Raikana heights (section 1, pi. 3) are composed of thick beds 

 Gneiss of Raikana of coarsely crystalline, almost porphyritic gneiss 

 heights, throughout which large felspar twins are scat- 



tered generally along planes of stratification, round which the other 

 minerals of the rock group themselves, in fact forming an 'Augen- 

 Gneiss.' Amongst the accessory minerals garnet is the most conspi- 

 cuous ; tourmaline and blue kyanite crystals are also frequently met 

 with. This gneiss in irregular thick beds composes the north-eastern 

 slope of the Raikana heights, dipping from 30 to 40 below the pa- 

 laeozoic group. 



The gneiss of the Painkanda sections is traversed in all direc- 

 tions by veins of albite granite, which show dis- 

 tinctly in the darker gneiss of the Raikana 

 peaks. A fine view of the latter with its net-work of granite veins 

 may be obtained from the Bamlas ( 16,681') on the left side of the 

 Dhauli Ganga. 



( 93 ) 



Albite granite. 



