DOMAIN II. SILICEOUS. 



In Switzerland it often contains garnets. , 



The same, from Altenberg, in Saxony*. 



The basaltic granite of Wallerius, from Suder- 

 mania. It is either black, yellowish, or greenish. 



The same, of an iron colour, from Norberg, in 

 Sweden; but this seems rather to belong to the 

 siderous division. 



Henkelite is also found in Bohemia, Saxony, 

 Tyrol, Stiria, &c. It is believed that the ancient 

 black and green granites, so called, often consist 

 of this substance f. 



STRUCTURE IV. MINGLED. 



The most usual parasitic stones of granitel are 

 schorl and garnets, both composed in a great part 

 of iron. 



Wernerite, with garnets, from Vesuvius. 



The same, with actinote, from the same. 



Lehmanite, with steatite, from the Alps. 



Henkelite, with garnets, from the Alps. 



The same, with steatite, from the same. 



The same, with schorl, from the same. 



* Linn. 218. 



f Launay, Essai sur 1'histoire natureile des Roches, Bruxelles 

 1786, 12mo. p. 41. 



