IQO ANALYSES OF MINERALS. 



the method admitting of great accuracy, since the pro- 

 duct, from which the proportion is ascertained, weighs 

 in the proportion of 9'08 to one of dry potash. 



XVII. 



Analyses of Minerals; by Martin Henry Klaproth, 

 Ph. D. Sfc. 



(Continued from vol. XXXI, p. 3B2.J 

 Triple sut- \JJrE of antimony and lead from Nanslo, in Cornwall*. 



phuret of lead 



fromCornwall. Lead 39 



Antimony 28*5 



Copper « • • «. 13*5 



Sulphur « ]6 



Iron ............. i 



Loss 2 



100 



Sulphuret of Q re of copper and bismuth from Wittichen. 



bismuth and 



vopper. Bismuth • 47"24" 



topper t 34*66 



Sulphur 12*58 



Loss 5'52 



100 



Meteorolite of Native iron of a meteorolite from Agrau. 

 Agrau. _, . " 



Native iron 96*5 



Metallic nickel 3'5 



100 



and Mexico. Proust analysed a meteorolite from the province of Chaca 

 Gualamba, in Mexico, sent by Rubin de Celis, and found 

 in it native iron and metallic nickel. 



* See Journal, vol. IX, p. 14; XX, p. 332; and XXIV, pp. 225, 

 251, 321 ; for a full account of the triple sulpliuret of lead, copper, and 

 antimony, from 'Cornwall, by Mr. Hatchett, Mr. Smithson, and count 

 tie Bournou. 



Humboldt 



