Copper. 



byfarhicls : it is found in England, Scotland^ 

 Germany, &c. it effervefces with acids. 



8. According to Mr. Fontana, i i Roz. 51 1< 

 ioo parts of it contain 73 of copper, 26 of 

 fixed air, and i of water. Mr. Bergman ailfo 

 found it to contain fixed air, 2 Bergm. 430. 

 The brown, or hepatic ote, contains a vari- 

 able proportion of iron or pyrites, and fome- 

 times fulphurated copper, and hence affords 

 from 20 to 50 per cent, of copper. It is 

 often iridefceht; 



II. VARIETY. 



Green, Malachite, Mountain Green. 



9. Malachite has the appearance of greert 

 jafper, but is not quite fo hard, for it does not 

 ftrike fire with fteel > it is either of a ra- 

 diated or equable texture, generally of an 

 oval form, and the fize of an egg, but fome- 

 times it forms capillary filaments. Its fpe- 

 cific gravity, according to Mufchenbroeck, is 

 from 3,5 to 3*994; it is fometimes mixed 

 with calcareous Earth and gypfunu It is 

 found in Norway Siberia, &c< 



to. According to Mr. Font ana, ioo Parts of 

 the pureft fort, contain ^5 of copper, and 

 &5 of aerial acid and water. 



82 i *. Mountain 



