MlfCERALOOY. 4 | 



Situated is Mai, thickly overspread with soil, and with the 

 densest jungle. It is not, as far I could perceive, inter- 

 sected by many streams which would afford the means cS 

 tracing the mineral deposit. The Great Tenasserim ri- 

 ver has passed through the manganese bed in cue spot, 

 2^ miles removed from two other points at which it oc- 

 curs to the north and south, at both of which it is like- 

 wise discovered near the surface by the action of the 



ms Thuggoo and Therabuen. The 

 therefore, is, that it is an horizontal deposit covering ma- 

 :are miles. But without indulging in conjecture, 

 there is sufficient at the localities referred to, to indicate 

 large quantities of manganese ore which could be collect- 

 ed by penetrating through the soil lying above it, ah 

 media. the spots in. which it is now exposed to 



the day. 



<( It occurs in the form of the black oxide, and is the 

 i mese of commerce. It is largely consumed in 1 



in the preparation of bleaching compounds, and 

 when pure, is valuable to the manufacturer of glass. 



' The soft black ore, No.l, is a hydrate of the peroxide 

 of manganese, known under the name of wad. It cou- 

 nter two equivalents, or 29 per cent. 

 Iron, 1.96 grains by analysis; its specific gravity is 1.47. 

 The specific gravity of the grey peroxide, No. 4, is 1.46." 



MOLYBDENA. 



Mr. Piddington, in analyzing the ores of antim j 

 and " in one instance a trace of molybdena." 



ANTIMONY. 



The -l of antimony, appears to be a very abun- 



dant mineral in Province Amherst. It is reported as 

 being often met with on the mountains, that bound the 

 valley of the Thoungyeen, Mr. O'Riley found it at the 

 sources of the Ataran, and large quantities of the ore have 

 been dug up in the neighborhood of Maulmain ; but there 

 was no demand for it in Calcutta whither it was sent, and 

 operations have been suspended. 



Mr. Piddington made the following report on speci- 

 mens of the ore that were sent hi ji : " We received 



