Organic Acids in the Examination of Minerals. 17 



3. — ON BOILING. 



E. 



Without evolution 

 of Gas. 



F. 



With liberation 

 qfCO^. 



G. 



With liberation 

 ofII,S. 



H. 



With separation 

 qfSiO;. 



Cuprite, ! 



Ziiicite, 



Melaconite, 



Goetliite,* 



Limouite,* 



Allaiiite,(V) 



Apatite,* 



Wolframite,* 



Wulfenite, 



Crocoite, 



Gypsum. 



and 

 those in A. 



Hausmannite,f 

 Pyrolusite, !f 

 Manganite,f 

 Psilomelaue, !f 

 Wad, !t 

 Magnesite, ! 

 Siderite. ! 



and 

 those in B. 



Bornite, 



Jamesonite,* 



Bournonite, 



Boulangcrite, 



Kermesite. 



and 

 those in C. 



Tephroite,:]: 



Ilvaite, 



Phlogopite,* 



Datolite, 1% 



Prehnite,* 



Heulandite, 



Serpentine, 



Cliiysotile, 



Retiualite, 



Bastite, 



Genthite, 



Gieseckite,* 



Jefferisite, 



Masonite.* 



and 

 those in D. 



11. 



Decomposed by a boiling soLuxioisr of Citric Acid, mixed 



I.— With Sodium Nitrate. K. — With Potassium Iodide. 



Silver, 



Mercury, 



Copper, 



Arsenic, 



Antimony, 



Bismuth, 



Sulphur,* 



Bismuthinite, 



Domeykite, ! 



Argentite, 



Hessite, 



Chalcocite, ! 



Tiemannite, ! 



Millerite, ! 



Niccolite, ! 



Pyrite, ! 



Chalcopyrite, ! 



Linuaeite, 



Smaltite, ! 



Cobaltite, ! 

 Ullmannite, ! 

 Marcasite, ! 

 Arsenopyrite, ! 

 Nagyagite, 

 Covellite, ! 

 Berthierite, ! 

 Pyrargyrite, 

 Tetrahedrite, ! 

 Tennantite, ! 

 Stephanite, 

 Polybasite, ! 

 Enargite, ! 

 Urauinite, ! 

 Hlibnerite. 



and those in 

 C and (Jr. 



Realgar,* 



Orpiment,* 



Cinnabar, ! 



Hematite,* 



Menaccanite,* 



Washingtonite,* 



Magnetise,* 



Franklinite, 



Braunite, 



Enstatite, 



Hypersthene, 



Augite, 



Spodumene,* 



Hornblende,* 



Actinolite,* 



Pargasite,* 



Olivine, 



Almandite, 

 Pyrope, 

 Colophonite, 

 Epidote. 



and most of 



those in 



A, B, C D, E, F, 



G, II, and I. 



