16 



CATALOGUE OF MINERALS. 



No. 



Name. 



292. Lievrite * 



293. Kyanite* 



294. Sillimanite * 



295. Sapphirine 



296. Euclase 



297. Sphene * 



298. Keilhauite 



299. Tourmaline* 



300. Talc * 



301. Meerschaum 



302. Neolite 



303. Spadaite 



304. Chlorophaeite 



305. Crocidolite 



306. Picrophyll 



307. Kerolite * 



308. Monradite 



309. Aphrodite 



310. Picrosmine 



311. Saponite * 

 * And XI gi J. 



B. Hydrous Silicates. 

 I. Magnesian Hydrous Silicates. 



1. Talc Section. 



Mg«Si5 + 2a 

 MgSi + fi? 

 (Fe,Slg)Si + ifi? 

 ilg^Si'4-4B[ 

 FeSi + 6fl? 

 (Na,l[lg,Fe)«Si5 4-2fl 



2. Serpentine Section. 



(Mg,Fe)'Si^ + 2a 

 Mg»Si^ + 4^Il . 

 (Slg,f'e)'Si2 + ff[ 

 S[g»§i^+2|B: 

 ]Slg»Si' + im 

 2Mg3Si2 4-Xlgi + 10fl: 

 t R = Fe. Slg. Ca. Na. R = Xl. Pe. 



3? 



4? 



6? 



