^^26 M. Berzeiius on Isomorphism as [June 



9, Silicates of alumina. 



Disthene u4^ S 



Plastic clay '.'.'.'. ji S3 



Blue clay ', !.!!!!'.'..'." ui S'^? 



Clays in general. 



*. Silicates with several bases. 

 1. Silicates with an alkaline base, with silicate 

 of alumina and water of crystallization. 

 Zeolites 



Apophyllite KS^ + 8 C S3 + 16 Jg 



Chabasie ^ 



a. with base of soda ^j-S'^ + 3 jt S^ + 6 Aq 



*• with base of lime (Levyne) N\s'^ + SAS'' + QAq^ 



^esotype NS3^SAS + 2Aq 



^^«ol"e NS3 + <2CS3+9AS + 8Aq 



— from Hauenstein ^Si + CS^ + 6 A S + 6 Aa 



^^esok i\rs»+ 2 CS^ +9AS + 8Aq 



Analcime JVS^ + 3 A S^ + 2 Aq 



Thomsonite N S' + 3CS + nAS + 10 Aq 



Stilbite C S3 + 3 A S3 + 6 Ag 



dodecahedral, lamellifonn iV" f '^' + 3A S» + 6 Aj 



Heulandite CS^ + 4AS3 + 6 Aq 



^'^"^^'^"'e ^S^ + 4^S3 + 8Aq 



Laumonite CS^ + 4AS* + 6 Ag 



^•^"^^^"e CS3 + 3AS +3Aq 



Harmotome B S4 + ^AS + 6 Ag 



9 IT/--"-;. • •••• C'S3 + 3AS + Aq 



4. Anhydrous silicates, vAth an alkaline base 

 and silicate of alumina. 



^^J^P^"^ KS3 + 3AS3 



:^"^"P ... NS3 + 3 AS" 



^^?*^'e LS^ + 3AS3 



•'"Phane L Ss + 3 A S^ 



Spodumene with base of soda rr^^ "*" 3^ S' 



, . , M) 



Jjencife (amphigene) jf ,5. + 3 A S^ 



Labrador * j^^ 53 + 3 C S3 + 12 A S 



^^'^"thine ^IS'^ + ^AS 



Meionite. 



Scapolite. 



"Wernerite. 



Ekebergite CS^+3NS^ + 8AS ■ 



^I*°lite ^Is +3AS 



^^Plj.^^"« NS+ 3 AS 



?°'^'*^'« NS^+2AS 



TTT ;•••• CS + 2^■& + 9AS 



Anhydrous scolezite r S3 4. 'i // « 



Andalusite? + J /2 » 



Appendix. 



Perlstein, spheerulite. 

 Resinite. 

 Obsidian. 

 Marekanite. 



