24 



\'I. Hydrocarbon Compounds. 



Native Elements. 



II. Sulphides, Arsenides. 



(Tell-urides, Selenides, Antimonides, and Bismuthides are not 



known to occur.) 



Argentite 



Bournonite 



Bismuthenite 



Berthierite 



Boulangerite 



Bormte 



Chalcopyrite 



Cinnabar (?) 



Covellite 



Chalcocite 



Dufrenosite 



Sulphides, 



Greenockite 



Galenite 



Heazlewoodite 



Huascolite 



Jamiesonite 



Marcasite 



Molybdite 



Maratite 



Millerite 



Plagionite 



Przibramite 



Pentlandite 



Pyrites 



Pyrrhotite 



Stromeyerite 



Stannite 



Sternbergite 



Sphalerite 



Stephanite 



Stibnite 



Tetrahedrite 



Tennantite 



Sulph'A rsenides, 



Arsenopyrite 

 Cobaltine 

 Glancodi-te 

 Proustite 



Arsenides. 



Leucopyrite 



Niccolite 



Smaltine 



III. Compounds of Chlorine, Bromide, and Iodine. 



Atacamite 

 Cerargyrite 



Embolite 

 Halite 



lodyrite 

 Matlockite 



IV. Fluorine Compounds. 

 Chlorophane Fluorite Yttro-cerite 



