COAL 



(11 



Similar deposits arc found in the Kan-ngai valley (lat. 24° 47': 

 long. 98° 8'), in the Lo-po-ssu-ch'uan where beds of lignite-bearing 

 shales are worked near Lai-fu, in the Yung-chang Fu plain, and 

 indeed in most of the old lake basins of Yunnan. As the materia! 

 has no economic value, except possibly a very small local one. it 

 is not proposed to describe the separate occurrences. 



In Eastern Yunnan precisely similar deposits occur. They were 

 T . . . „ noticed originally by Leclere and Monod and 



Liynito m Eastern 1 , -, T 1 . , 



Yunnan. Jater b y Laatenois who pointed out that the 



lignites could not be sold in Tongking and 

 only possessed a local interest. 



The lacustrine deposits of the Teng-yiieh valley, (lat. 25° 0': 

 * , m !ong- 98° 30'), contain beds of peat, which is 



Peat in the 10m:- i i i i , , 



yuch valley. black, somewhat compressed and has remains 



of thin roots and stalks of plants preserved 

 in it. Under the alluvial soil and loam, thin layers of yellowish 

 grey clay are usually found, underlain by lighter sandy beds made 

 up almost entirely of small grains of clear quartz with a few milky 

 grains of felspar. Under the sandy beds there is often a layer of 

 black peat up to 4 feet in thickness. During the winter the peat 

 is dug out and sold for burning in stoves. It has been formed 

 in much the same way as the lignites, though it is considerably 

 younger. 



Brown lignitic coals, containing a high percentage of moisture 



are found in various parts of the Northern 

 Northern & Skan n states! Slmn States of Burma in small basins filled 



with late Tertiary silts, occupying the valleys 

 of the streams that rise among the hills surrounding Loi Ling, 

 the loftiest mountain in the States. Sometimes the seams attain 

 a considerable thickness, one in the Lashio field being 30 feet thick. 

 Attempts have been made to use some of these lignites but up to 

 the present time they have not been successful. They are men- 

 tioned here because of their similarity of composition, occurrence 

 and formation with the lignites of Yunnan. 



Analyses of late A number of assays of lignites from 



Tertiary lignites. various localities are tabulated below:— 



