782 



REPORT OF NATIONAL MUSEUM, 1897. 



OXYGKN SALTS : CI>ASS, — TITANATES. 



Tbe titanates, derivatives of HaTiOa aud HjTizOs, or coiupounas of 

 oxides with oxides whose negative portion is made up solely or chieHy 

 of titanium oxide, may be arranged under the following types: Titan- 

 ates, compounds in which the negative portion is titanium oxide j titano- 

 silicates, compounds in which the negative portion is compounded of 

 titanic and silicic; oxides; columbotitanates, including those conii)ounds 

 intermediate between the titanates and the succeeding columbates, and 

 whose negative i)arts may consist of the oxide of titanium with the 

 oxides of columbium, or silicon, with zirconium, etc. 



Perovskito. 



Knopite. 

 Geikielite. 



Pyrophauite. 



Ilmenite. 



Menaccanite. 



Kibdelopbauc. 



Crichtouite. 



Hystatite. 



Uddevallite. 



Basaiiomelane. 



Picrotitanite. 



Hydroilmeuite. 



Pseudobrookite. 



Derbylite. 

 Lewisite. 



Group 2, 



Fe^(TiO.,):!. 



Group 3. 



5FeTi03.Fe(SbO:,):. 

 2(Ca,Fe)TiO:i.3Ca(SbO:,)> 



Ortborbombic. 



Ortborlionibic. 

 Isometric. 



Titanite. 



Titanoraorpbitf. 



Ligurite. 



Grotbite. 



Eucolite titauite. 



Zhkelite. 



Alsbedite. 



Xantbitane. 

 Neptunite. 

 Keilhauite. 

 Tscbeffkinite. 



B. TITANOSILICATES 



Group 1. 

 CaTiSiOft. 



Mouocliuic. 



(Fe,Mn)TiSiOs. Monoclinic. 



Ca(Y,Al)(Y,Al,Fe)[(SiTiOs)(SiOft)]. Monoclinic. 

 (Fe,Ce,La,Di),(Ca,Fe,Gl),(SiTiOf,):i. ( ?) 



