C H5 3 



Form. Anal. Copper 52. Acid 10. Oxygen 

 ii. Water 12. Sand 11. Rochefoucauld. 



h. Sulphuret of Copper, Vitredus Copper Ore, 

 br Pyrites of Copper; of a lead grey colour, crys- 

 tallized in hexahedral truncated prifms; contains 

 copper with fulphur; fometimes a little fiiver or 

 arfehit. Found at Freiberg. 



i. Variegated Copper Ore ; exhibiting various 

 colours; intermixed with copper pyrites and vi- 



- treous copper. Found at Freiberg. 



k. Yellow Copper Ore ; cryftallized in equilate- 

 ral tetrahedrdns, arid various; compofed of cop- 

 per, iron and fulphur. 



h Grey Copper Ore; cryftallized in tetrahedrons 

 and their modifications, and in fix-fided prifms. 

 AnaL Copper 16. Lead 34. Antimony 16. 

 Iron Sulphur iOi Silver 2. Silex 2. Klap- 

 roth 



m. White Copper Ore; fiiver white, brittle; on 

 rubbing emits an arfenical fmell 5 compounded of 

 copper, iron, and arfenic. Found near Freiberg. 



G. IRON. 



IRON is about eight times heavier than water, 

 is attracted by one of it's ores, called the load- 

 ftone ; foluble in all acids, alkaline folutions, wa- 

 ter, and air ; it's folution is turned of a black or 



tJ dark 



/ 



