54 HOLLAND: MICA DEPOSITS OF INDIA. 



six miles north-west of Bodeli railway station. The mica is said to be 

 of small size, but the locality has not been critically examined. 1 The 

 area within which both the above occurrences of mica are said to be 

 exposed is occupied by a tract of the transition rocks distinguished 

 as the Champaner beds, which pass by an apparent transition into 

 gneissose rocks, possibly bearing the same relation to the Champaner 

 beds as that found so often elsewhere to be the case when schistose 

 rocks come into contact with granitoid gneisses. 



BURMA. 

 Leases have been granted for mica mining near Ye-nya-u in the 

 Thabeitkyin township, Ruby Mines district, and a small quantity of 

 the mineral has been raised. Specimens have also been found on the 

 road between Sakaw and Nanyetseik in the Myitkyina district; 

 eight miles east of Manwe on the Indaw stream, near the corundum 

 quarries, and on the Shwedaung Gyi hill at the exit of the stream 

 from the Indawgi lake. 



CENTRAL INDIA. 



Rewah. 



Muscovite, in sheets 4 to 5 inches square, has been found at 

 Bardghatta on the Rehr river in the Singrauli ilaqa, but the specimens 

 sent by the Political Agent were damaged by pressure-figures, and 

 were stained by dendritic inclusions. The latter, however, is not a 

 serious fault, and the' veins should be more thoroughly exploited for 

 mica, as we know, from Mr. Mallet's description of the Singrauli 

 crystalline rocks, that the geological conditions resemble in all essential 

 respects the productive belt of Behar. 2 In Singrauli there is a 

 development of the composite schists and gneisses, not unlike those of 

 Behar, following the northern fringe of the massive gneisses. The 

 foliation-planes have a general trend of west-south-west to east-north- 

 east in the direction of the Behar mica-belt, which is but a continua- 

 tion of the same series, the intermediate portions being covered by a 



1 Selections, Rec. Bombay Govt., No. XXIII, p. 101. 



2 Cf. Manual Geol. of India, 2nd Ed., pp. 30 and 31. - 



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