THE PAUNGDAW GROUP. 200 



the Putletto Mining Syndicate's Putletto, is usually regarded separate - 

 lv. but to avoid a multiplicity of terms it is preferable to place it 

 in the Paungdaw group, to which it naturally belongs. 



Putletto. — The prospecting license was taken out in 1911 and the 

 mine has produced as follows : — 



1 1013 



Tons. 



1 i«u i :;,i 



13 



10 16 



1016 



1017 ! " 



1018 98J 



The average amount of eassiterit ! in the concentrate is about 

 7 per cent. 



The mine lies on a spur of Oktu Taung, adjacent to that on 

 which Messrs. Steel Bros." Putletto mine is situated. Both spurs 

 are formed by lobes of the main Paungdaw boss. This particular 

 one. however, is broader and more dome-like than the other one. 

 and its sides pass beneath the flanking sediments at lower angles, 

 so that the junction of the granite and its overlying cover has. in 

 plan, a somewhat sinuous course, as the variations of the giound 

 relief affect it more than is the case with a more vertical plane of 

 contact. It also has a patch of Mergui rocks remaining undenuded 

 from its highest portion. Some 30 veins are known, with a remark- 

 ably regular strike to the north and south, or to a few degrees east 

 of north and west of south. They all dip easterly at 60° — 65°. 

 Many of them are over one foot in width, and there is one of four 

 feet, one of five feet, and one of four to eight feet in thickness. 

 Though not fully traced out. several veins appear to have a longer 

 strike extension than is usual and workings over LOO feet below 

 the outcrops show that they carry to that depth without diminution 

 in size or value. All except one are in granite and two or three 

 are said to pass from granite into sediments with a slight thickening 

 in the latter, but they have not been followed for more than a short 

 distance from the contact. Pyrite is the common associated vein 

 mineral, and. in two of th > veins. Xos. 3 and 7, the cassiterite content 

 is high. Manganese oxides are common in the weathered portions 

 of the veins and rhodonite has been found in small amounts. 



1 These totals include the production of thtjydjoining Putletto mine of Messrs. Steel 

 BrOB, & Co., Ltd., as well. I.eeanse duriny; these hvo sears the t wo properties were worked 

 us one mine under one owner. 



