GG COGGIN BROWN : MINES & MINERAL RESOURCES OF YUNNAN. 



These coals furnish an excellent coke especially suited for 

 metallurgical operations. The Tou-tza coal is veiy friable but 

 the other localities yield compact solid material. The calorific 

 power is generally high. 



Mesozoic Coal in Central Yunnan. 



Leclerc in 1898 seems to have been the first European to learn 

 of the existence of coal in central Yunnan. Writing of the rocks 

 met with near Yunnan-i he states "They probably reach to the 

 llhsctic horizon, for at Mu-pang-pu coal outcrops are worked, from 

 which an ashy coal is won, which is nevertheless made use of as 

 far as Yunnan-i" (Le., p. 397). 



I visited the area in November 1908 and again in -June 1909. 



In the hills to the south of Miao-tsway a village 2 or 3 miles 



south of Yunnan-i (lat. 25° 2G' : long. 100° 

 Coal-scams at Miao- ^'^ three coal-seams are found, each three 

 bNva> ' or four feet in thickness and separated by 



bands of hard yellow and yellowish-white sandstone. Interbcdded 

 with these are layers of soft, greyish-white, sandy shales. Fossils 

 .were collected from certain marly horizons in the vicinity, but 

 until they have been determined, the exact age of the seams them- 

 selves cannot be stated, but they probably belong to either the 

 Trias or the Rhrctic. The outcrop coal is won by the Chinese by 

 means of shallow drifts and incline shafts. The seams strike 

 N 15°-20°E and have a high dip in a south-easterly direction. 

 Samples from two of the seams gave the following results on 

 assay : — 



Locality. 



Moisture. 



Volatile 

 matter. 



Fixed 

 carbon. 



Ash. 



(i-59 

 10-35 





Miao-tsway (1) 

 Miao-tsway (2) 



2-03 

 1-52 



8-10 



9-00 



83-28 

 79-13 



Does not coke. 

 Sinters slightly. 



I was informed on Chinese authority that coal was mined to 



the south of Miao-tsway, and in February 

 1910, I was able to confirm the truth of my 

 information. Near the village of Li-kang- 

 ch'ang, towards the southern end of the Mi-tu plain, and approxi- 

 mately ten miles in a south-westerly direction from Miao-tsway, 



Extension of the 

 Yunnan Hsien field. 



