20 



CATALOGUE OF MINERALS. 



No. 



Name. 



Formula. 



System of 



crystallization. 



380. Datholite * 



381. Allophane * 



382. Schrbtterite * 



383. Chloropal 



384. Collyrite 



385. Wolchonskoite 



386. Chrome Ochre 



387. Pimelite 



388. Montmorillouite 



389. Delanovite? 



390. Erdmanite 



391. Bavalite 



5. Datholite Section. 



2Ca3gi+B3Si2+3a: 



itPSi2+15S 



^P Si + 311 



Appendix to Hydrous Silicates. 

 Pe;si^4-3H 



^p Si +15 a 



*Sgi + 2iH:? 



(Sl,^r)^Si^+4fi: 



(Ni, Mg)3 Si + 2(^1, Pe) Si + 93 



Ca, K, Xl, ¥e, Si, H 



]!;in'Si^ + 2XlSi2 + 45fi: 



Ca, Fe, iln, Y, Ce, La, Si, Bi, Bi 



Ca,Mg,Xl,fe, Si,II 



C. Unarranged Silicates containing Titanic Acid. 



392. Tscheffkinite ((Ca, Ti),€e,ia, Si) Si| 



393. Schorlomitet t 2fl»Si^ + 3RSi.J 1 



394. Mosandrite t ft» Si+ 2R Si + 4^ll 3 



395. -Wolherite 6(Xa, Caj^Si + 32rSi+ Cbgi 3 



396. Turnerite? 



Appendix. 



Ca,Slg,Sl,Si? 



* K=€r.SLlPe. 



4 :& = Ca. S = (Ca. Ti).€e.D. £a. 



t R = Ca. K = (Ca. Ti).5'e. 



