FOR SOLIDS AND LIQUIDS. 



45 



Name. 



Silicon dioxide. Quartz 



Formula. 



Sp. Gravity. 



Tridymite 



" " Asmannite 

 Titanium dioxide 



t! II 



(I U 



Ci (( 



" " Rutile- 



" Brookite. 



Anatase. 



SiO, 



Si O, __. 



Ti 0., 



2.G507. 0° 

 2.6502, 5° 

 2.0498, 10° 

 2.6493, 15° 



2.G488, 20° 

 2. 0484, 25° 

 2.0479, 30° 

 2.0400, 50° 

 2.0400, 100 c 



15°-16° 



2.295 

 2.326 



2. 282,' 18°. 5 



2.311 ) 



2.317 [ Artif. 

 2.373 J 

 2.30, 16°, " 



2.247 



4.18 



3.9311, artif. _. 



4.253, powder 



4.255, ignited 



4.249 



4.244— 4. 245_. 



4.250 

 4.291 

 4.420, 0°_. 



4.56 



4.20, artificial. 

 4.283 " 

 4.3 " 



4.173—4.278- 

 4.1281 

 4.131 I 



4,165 f 



4.1G0J 

 3.952, arkan- 



site. 

 3.892 

 3.949 

 4.03, arkansite 

 4.083 

 4.085 

 4.22 . 

 4.20. 



4.1, artificial. 



3.857 

 3.826 

 3.75 . 



Authority. 



fDibbits. (Rock 

 crystal.) Bei. 5, 

 81. Calculated 

 from sp. g. de- 

 terminations by 

 Steinheil, data 

 for expansion of 

 water by Reg- 

 nault and Kopp, 

 and the expan- 

 sion of quartz as 

 determined b y 

 PfaffandFizeau. 



Vom Rath. 

 1001. 



J. 21, 



G. Rose. Ber. 2, 388. 



Hautefeuille. P. M. 



(5), 6, 78. 

 v. Rath. A. J. S. (3), 



7, 142. 

 Klaproth. 

 Karsten. Schw. J. 



65, 394. 



Rose. 



Mobs. See Bottger. 

 Scheerer. P. A. 65, 

 296. 



Breithaupt. 



Kopp. 



Muller. J. 5, 847. 



Ebelmen. J. 4, 15, 



and J. 12, 14. 



Hautefeuille. J. 16, 



212. 

 Lasaulx. J. 36, 1840. 



H. Rose. 



Breithaupt. J. 2,730. 



Rammelsberg. J. 2, 

 730. 



1 Damour. J. 2, 731. 



Whitney. J. 2, 731. 

 Frodmann. J. 3, 704. 

 Beck. J. 3, 704. 

 Hautefeuille. J. 17, 



214. 

 Vauquelin. 

 Mobs. See Bottger. 

 Breithaupt. 



