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GRIESBACH : GEOLOGY OF THE CENTRAL HIMALAYAS. 



accessory minerals of which the most common are tourmaline, 

 garnet, beryl and others. Kyanite I found both in the gneiss and the 

 intrusive granite ; it occurs with beryl in considerable quantities both 

 at Niti and south of Shipki, but is met with in many other localities. 



The granite is clearly of phorphyritic nature, and its form of oc- 

 currence an intrusive one. In fig. 8 will be seen the complicated 

 manner in which the net-work of granite penetrates the crystalline 

 series. The right side of the Sutlej valley forms in the gorge south 

 of Shipki an immense, and almost perpendicular rock-wall, in which 

 the light-coloured albite granite veins contrast strongly with the 

 grey of the hornblendic gneiss, which composes the range through 

 which the Sutlej has eroded its course. 



* Fig. 9 shows hornblendic granite veins in phyllites belonging 

 to the lowest beds of the haimanta system of Tukchung in the Lissar 



Fig. g. Granite intrusions in haimantas ; Tuktung in the Lissar valley. 



Fig. io. Contorted haimantas near Baling in the Lissar valley. 



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