152 



Bulletin 80 



Compound 

 Malachite 

 CuC03.Cu(0H), 



Precipitated basic 

 copper carbonate 



Precipitated basic 

 copper carbonate 



Precipitated basic 

 copper carbonate 



Precipitated basic 

 copper carbonate 



Precipitated basic 

 copper carbonate 



Precipitated basic 

 copper carbonate 



Precipitated basic 

 copper carbonate 



Precipitated basic 

 copper carbonate 



Precipitated basic 

 copper carbonate 



Precipitated basic 

 copper carbonate 



Copper sulpliide; 



CuS 

 Chalcopyrite 

 CuFek 



Chalcopvrite 

 CiiFeS, 



Malachite 



Chrvsocolla 

 Cu Si Oj.n H„0 



Ciipric sulphide 



CuS 

 Cuprite 



Cu.O 

 Cupric oxide 

 CuO 



TABLE I 

 Solubilities of Copper Compounds 



Cu dissolved, 



parts per 



million 



Solvent 

 Water containing 0.12% 



carbon dioxide 29.0-31.0 



Pure water 1.5 



Water containing 0.12% 



carbon dioxide 34.8 



Water containing 0.13% 

 carbon dioxide and 

 0.01% sodium chloride 



Water containing 0.13% 

 carbon dioxide and 

 1.0% sodium chloride 



Water containing 0.12% 

 carbon dioxide and 

 0.01% sodium sulphate 



Water containing 0.12% 

 carbon dioxide and 

 1.0% sodium sulphate 



Water containing 0.12% 

 carbon dioxide and 

 0.01% sod. carbonate 



Water containing 0.12% 

 carbon dioxide and 

 1.0% sod. carbonate 



Water containing 0.12% 

 carbon dioxide and 

 0.2% calcium sulphate 



Water containing 0.12% 

 carbon dioxide and 

 0.11% calc. carbonate 



Oxygen-free water 



36.0 



58.0 



37.0 



58.0 



10.0 



0.7 



36.0 



1.4 

 0.09 



Pure water 

 Sodic sulphide 



measurable 

 amounts 



Anit. not 

 stated 



"Insoluble in water, slightly 

 soluble in water charged 

 with carbon dioxide." 



' ' Somewhat soluble in water 

 with carbon dioxide ' ' 



Water 1 to 950,000 



"Insoluble in water" 



' ' Insoluble in water ' ' 



Reference 



E. E. Free, Journ. 

 Am. Chem. Soc, 

 XXX, 9, p. 1367 



E. E. Free, Journ. 

 Am. Chem. Soc, 

 XXX, 9, p. 1370 



E. E. Free, Journ. 

 Am. Chem. Soc, 

 XXX, 9, p. 1370 



E. E. Free, Journ. 

 Am. Chem. Soc, 

 XXX, 9, p. 1371 



E. E. Free, Journ. 

 Am. Chem. Soc, 

 XXX, 9, p. 1371 



E. E. Free, Journ. 

 Am. Chem. Soc, 

 XXX, 9, p. 1372 



E. E. Free, Journ. 

 Am. Chem. Soc. 

 XXX, 9, p. 1372 



E. E. Free, Journ. 

 Am. Chem. Soc, 

 XXX, 9, p. 1372 



E. E. Free, Journ. 

 Am. Chem. Soc. 

 XXX, 9, p. 1372 



E. E. Free, Journ, 

 Am. Chem. Soc, 

 XXX, 9, p. 1372 



E. E. Free, Journ. 

 Am. Chem. Soc, 

 XXX, 9, p. 1372 



W. H. Ross, MSS 



U. S. Geol. Survey 



Mono^Taph 



XLVil, p. 1107 

 U. S. Geol. Survey 



Monograph 



XL VII, p. 1106 

 Moissan 5, p. 167 



Lindgren, U. S. 

 vjT. S. Prof, paper 

 43, p. 188 



Comey, Diet. Solu- 

 bilities, p. 139 



Comey, Diet. Solu- 

 bilities, p. 137 



Comey, Diet. Solu- 

 bilities, p. 137 



