LEAD AND SILVER. 



13L 



taken out than was necessary to make a low road, but the roof, 

 which was not a safe one, was very well timbered. The country 

 rock was a hard, crystalline limestone, with a very micaceous and 

 decomposed igneous (?) rock in small quantities. The ore body 

 was met with about 120 feet in from the portal. It was about 

 15 feet in width at the face which was about 8 feet high. Its limits 

 on either side were not seen. 



A second level, some distance above the first, on the mountain side, 

 met the ore-body about 30 feet in from the portal. Its limits were not 

 visible. 



On the top of the mountain, over 200 feet (by aneroid) above 

 the level of the lower adit, there is a large outcrop visible, of, pre- 

 sumably, the same ore-body. Adjoining the limestone on its 

 west side, it continued about 20 or 30 yards in breadth to the steep 

 side of the mountain, in an easterly direction roughly, where it could 

 be seen cropping out some way down. In a north-south direction 

 the outcrop could be traced roughly for over 120 yards. 



The ore consists of iron pyrites, with small quantities of 

 pyrrhotite and smaller amounts of chalcopyrite and galena. There 

 is certainly a large quantity of it available and I should have liked 

 to make a thorough examination of the occurrence ; this I was 

 not able to do. The Chinese miners plan their workings to obtain 

 the largest amount of lead and copper ores. 



On a hill to the west of Hsiao-hsin-kai a limestone was mined 

 for the argentiferous galena it contained. I did not visit the 

 locality. Argentiferous galena was also obtained from Long-su 

 and Loo-shan-ting further up the valley. I consider that the 

 Ming-kuan is rich in minerals and that it is a field which holds 

 out much promise to the prospector. 



Silver content of certain ores from Ming-kuan. 



Locality. 



Ore. 



Silver per ton of lead. 



Tong-shan 



Hong-too-hai . 



llsiao-lisin-kai 



Hsiao-hsin-kai 



15(> oz. 2 dwts. 22 grs.; traces of gold. 

 123 oz. 12 dwts. 20 grs.; appreciable 



traces of gold. 

 6-34 metal, mainly copper, with a 



little lead. 

 oz. 13 dwts. 22 grs. silver per ton of 



metal ; traces of gold. 

 ' 18 oz. 18 dwts. 22 grs. silver; 3 dwts. 



6 grs. gold. 



(Analyst, T. H. Blyth, 1908). 



Galena 



Galena 



Slag 



Lead 



