20 CATALOGUE OF MINERALS. 



Jfo. Name. Formula. 



crystallization. 



5. Datholite Section. 



380. Datholite * 2Ca 3 Si + B 3 Si 2 +33 



381. Allophane * l 3 Si 2 + 153 



382. Schrbtterite * l 4 Si + 33 



Appendix to Hydrous Silicates. 



383. Chloropal egi 2 +33 



384. Collyrite l 3 Si + 153 



385. Wolchonskoite * K Si + 2B ? 



386. Chrome Ochre (3tl,r) gi 4 + 43 



387. Pimelite (Ni,Mg) 3 Si + 2(Xl, 



388. Montmorillonite Ca, K, 5-1, ^e, Si, 3 



389. Delanovite? Mn^ + 2X1 Si 2 +453 



390. Erdmanite Ca, Fe, Mn, Y, Ce, La, Si, Si, 3 



391. Bavalite Ca, Mg, 1, e, gi, 3 



C. UNARRANGED SILICATES CONTAINING TITANIC ACID. 



392. Tscheffkinite ((Ca, Ti),e,Ea, 3tl) gif 



393. Schorlomite f t 2E 3 Si J + 3S Si J 1 



394. Mosandrite $ fi 3 Si + 2K Si + 4*3 3 



395. Wolherite 6(Na, Ca) 3 Si + 32r Si+ Cb Si 3 



Appendix. 



396. Turnerite ? Ca, ilg, Si, Si ? 4 



* fi= &amp;lt;5r. XI. Fe. f S = Ca. K = (Ca. Ti). Pe. 



J fi = Ca. K = (Ca.Ti).&amp;lt;9e.D.a. 



