38 MINERALOGY. 



SILVER. 



In the lead ore of the Salwen valley, which Dr. Morton 

 sent Professor Mitchell for analysis, " the quantity of sil- 

 ver appeared to be considerable ;" and in the mines north 

 of the provinces, silver is said to be found mixed with lead. 

 Mr. O'Riley had a specimen of an ore of silver, antimony, 

 copper, and sulphur brought him, which produced thirty- 

 five per cent of silver; and the Tavoy gold, it would ap- 

 pear, contains nearly ten per cent of the same metal. 



Gg» 0D1. ©■« 



goo5o pure silver. 



c^ooBdiccolgcocpoSn silver. 



1 O U 



COPPER. 



Dr. Heifer says : " The existence of copper on the 

 Lampei Islands, the very first I suppose in this part of 

 India as yet traced, is worthy of attention, and may lead 

 to farther discovery of extensive veins of this ore." 



Mr. O'Riley states, " that specimens of copper ore have 

 been brought from several islands of the Mergui Archipel- 

 ago, and all obtained appears to be of the same character, 

 viz the grey copper ore, containing from forty to fifty parts 

 of the metal in combination with antimony, iron, and 

 sulphur." He has also " traced the existence of the su!- 

 phuret of copper " on the Ataran ; and I had a fine speci- 

 men of the green carbonate, or malachite, brought me by 

 a Burman who said he received it from a Karen, who 

 represented that it was found near the head waters of 

 the Ataran ; and other natives have assured me, that the 

 same mineral exists up the Salwen. 



eoi£gfi. 06091. Sffiu 



Gy6q8o^c^foosGcqpo5ti copper ore. 

 ooocosjggoa green carbonate of copper, or 

 malachite. 



BLUE CARBONATE OF COPPER. 



The blue carbonate of copper 13 seen in the same 



