48 Prof. Naumann on Mineralogical Classification. 



F. Containitiij Nickd. 



HaarJcies Placodine 



Iron Nickel-Pyrites Bismuth Nickel -Pyrites 



Grey Nickel- Pyrites Antimony Nickel-Pyrites 



Red Nickel-Pyrites Nickel-Antimony 



CLASS XIII. CINNABARITES, (Blendes.)— Sulphurets of metals 

 of a non-metallic, or only semi-metallic, habitus ; pellucid, (with exception 

 of manganese blende) ; from adamantine to pearly lustre ; sectile orslightly 

 brittle ; hardness reaching that of fluor-spar ; specific gravity above 3'4. 



Manganese-Blende Miargyrite 



Zinc-Blende Antimony Silver-Blende 



Voltzine Arsenic Silver-Blende 



Cadmium- Blende (Greenockite) Mercury- Blende 



Antimony-Blende Red Arsenic-Blende 



Fire-Blende Yellow Arsenic-Blende 



CLASS XIV. THIOLITES.— Nearly the same may be said of sulphur 

 as of water ; it is of so peculiar a nature, that it can scarcely be arranged 

 in any of the other classes. 



Sulphur Selenium-Sulphur 



CLASS XV, ANTHRACIDES.— In part crystalline and of inorganic 

 origin, and in part phytogenic, i.e. consisting of vegetable matter more 

 or less decomposed and mineralized. 



(a) Mineral 8vhstancc?. 

 Diamond, Graphite 



(6) Phytogenic Suhstanws. 



Anthracite Brown Coal 



Black Coal 



CLASS XVI.— ASPHALTIDES.— Resins and organic combinations. 



* From Leonhard and Bronn's Jahrhuch fUr Mineralonie itr, 1844, Heft (i. 

 p. 641. 



