404 



ON MINERAL VEINS. 



Quartz (by fusion 



and by sublima- 

 tion) 

 Felspar 

 Mica 



Hornblende 

 Actinolite 

 Chlorite 

 Steatite 



Serpentine 



Chrysoberyl 



Epidote 



Apatite 



Finite 



Idocrase 



Antbophyllite 



Andalusite 



Stilbite 



Jade 



Earthy Minerals. 



Fettstein Schorl 



Talc Tremolite 



Opal Emerald 



Chrysoprase Gabbronite 



Hatiyne Wernerite 



Meionite Pyrophysalite 



Sommite Lapis lazuli 



Leucitc Asbestos 



Pseudo sommite Hypersthene 



Pleonaste Diallage 



Garnet $ ^ U K^ 



Cyanite * Sahlite 



Zircon Peridot 



Fluor spar Melilite 



Spodumene Tabular spar 



Corundum Melanite 



Beryl Idocrase 



Topax Ice spar 



Tourmalin Arragonite 



Together with some other volcanic minerals which 

 are yet ill defined. And the metallic minerals thus 

 found, are the following. 



Copper Sphene 



Oxydulous iron Iron pyrites 



Galena OxydeofTin 



Graphite Snlph. Molybdena 



Chromat of Iron Gold. 



Such is the balance, as far as it yet appears possible 

 to construct a tolerable list of this nature, between the 

 aqueous and the igneous minerals. It would be highly 

 improper, at present, to deduce from it any conclu- 

 sions respecting a theory of mineral veins. For, 

 though all the minerals of these were aqueous, or all 

 igneous, we are equally at a loss to conjecture whence 

 they came and how they are so limited and so dis- 

 posed as they are in veins. It might indeed be con- 

 sidered an argument in favour of an igneous theory, 

 that the mines of Nagyag lie in volcanic rocks. But 



