PHYSIOGRAPHY. 



Rutile. 



167 



Color reddish-brown. 



Hardness rather below 3.0. Sp. gr. =2-7. 

 1. In the flame of a candle, it exfeliates. 

 2. Analysis. 



Silica . 

 Oxide of iron 

 Alumina 

 Magnesia . 

 Potash and Soda . 

 Volatile matter . 



By KLAPROTH. 



45-00 

 2000 

 10-00 

 10-00 

 10-00 

 5-00 



3. It is found with Mica and Pyroxene, at Schima in the Mittelgebirge, 

 in Bohemia. 



4. It appears to be a Mica which has become .altered by heat. 



RUBELLITE. (See Tourmaline.) 

 RUBINGLIMMER. (See Ltimonite.) 



RUTILE. Peritomous Eruthron e-Ore. 

 Primary form. Right square prism. 

 Secondary form. 



Fig. 385. 



Mon d - 135 5' 



Mon e - 161 40 



Mon c - - 122 45 



a on a - 123 15 



a on c - 151 42 



a on d - - 123 15 



e ond - - 153 33 

 a on a over summit - 90 00 



c on c " " - 109 47 



PHILLIPS. 

 el 



<c 



it 



(C 

 U 

 (C 

 (C 



