434 M. Berxelius OH Isomorphism, Sj'C. [June, 



Sulphate of alumina. 



«. Neutral Al S^ + x Aq 



b. With excess of base Al S + 9 Aq 



c. Aluminite. 



d. Potassa-alum K S- + 2 Al S3 + 48 Aq 



f. Ammonia-alum Az' H' S + aI S' + 26 Aq 



Sulphate of uranium U S^ + x Aq 



Sulphates of uranium and copper. 



Appendix : Silicates containing sulphates. 



Lapiz lazuli. 



Haiiyene. 



Nosiane. 



18. F. Chlnrine. 

 Chlorides (rnuriales). 



Sea salt Na Ch^ 



Chloride of ammonium Az H* Ch* 



■ < calcium * Ca Ch* 



- magnesium M Ch* 



lead 



a. fromMendip Pb Ch* + 8 Pb . 



h. Murio-carbonate of lead, from Matlock Pb Ch* + Pb C* 



Chloride of copper Cu CM + 3 Cu + 8 Aq 



— silver.. Ag Ch* 



- mercury Hg Ch* 



Appendix containing chloriferous silicates al- 

 ready mentiomd^ but which, perhaps, may be 

 belter placed near the chl')rides, 



Sodalite. 



Pyrosmalite. 



Eudyalite. 



Class II. — Minerdh composed after the Manner of Organic Sub- 

 stances, from which theq appear lo derive their Origin. 



a. Organic substances but slightly changed, d. Bitumens. 



Mould (Humus). ' Bitumen. 



T • ■-, Asphaltum. 



Lignite. *^ 



I^ysodil. e. Coal. 



b. Fossil resins. AH its varieties. 



Yellow amber. 



Retin asphaltum. f. Salts. 



Elastic bitumen. Mellite. 



c. Fossii oils. Oxalate of iron. 



Naphtha, 

 Petroleum. 



