42 HOLLAND: MICA DEPOSITS OF INDIA. 



lying on a thick zone of mica-schists (A), some with felspar and white 

 silvery mica, others with diaspore and talc, and bands with andalusite 

 knots, the lowest beds in this zone being coarse mica-schist with 

 pegmatite sheets. Under this follow in order a thin band (about 

 2o feet) of quartzite (/;), hornblende-gneiss with pegmatite (/), flaggy 

 quartz-mica schist (k), and a very thick band of graphic granite (/) 

 with large lumps of magnetite, separating the schists from the well- 

 foliated margin of the granite mass forming Mowatand hill. Peg- 

 matite veins are very abundantly developed in this transition zone, but 

 become less prominent as the hill is approached and the granite is less 

 distinctly foliated. The granite of the two hills, Mowatand and Banda> 

 occurs quite commonly throughout this mica belt, forming characteristic 

 dome-like masses, from which fact it was referred to formerly as the 

 " dome gneiss ". It is, however, a true granite, presenting, along its 

 borders, a well marked contact zone, and its constant occurrence near 

 the large network of pegmatite veins suggests that the latter are the 

 final products of the consolidation of the magma which gave rise to the 

 Erranite. 



( 32 ) 



