18 



CATALOGUE OF MINERALS. 



Formula. 



System of 

 crystallization. 



333. Cronstedtite 



334. Sideroschisolite 



335. Margarite * 



336. Ephesite 



II. 



337. Pyrophyllite * 



338. Pholerite* 



339. Anthosiderite 



340. Apophyllite* 



341. Pectolite* 



342. Okenite 



343. Laumontite * 



344. Leonhardite * 



345. Catapleiite 



346. Dioptase 



347. ChrysocoUa * 



348. Demidoffite 



349. Pyrosmalite 



350. Portite 



(Mg,Fe,Mn)3Si^ + 5PeSiJ4-3H 6 



f'e»SiJ+^fl 6 



(Na,Ca)'Si + 3Sl2gi + 3E[ 3 

 Na, K, Ca, Si, Si, fi 



Non-Magnesian Hydrous Silicates. 



1. Pyrophyllite Section. 



SlSi' + l^fl . 3 



XPSi<+6B[ 



Pe Si3 4- a 



2. Pectolite Section. 



(Ca,K)'Si^ + 2a 2 



(Ca,Na)^Si»-|-fi 4 



Ca'Si*+6fl 3f 



Ca'gi2 + 3Xlgi2 4-12a 4 



Ca='Si^+3Xl§i2 + 9ll: 4 



(Na,Ca)»§i2+2ZrSi2 + 6Jl 6 



Cu'Si^+SEC 6 



Ou''gi^+6fi: 



Cu,gi,fi: 



* ACk^ gi + 2ft3 gi2+ 6fl) + 3Fe CI 6 



Slgi^ + 2ll[ 3 



