169 



TAB. CCCXCIII. 



S I L E X quartzum, stellatum. 

 Radiating or Stellated Quartz. 



Div. 2. Imitative. 



I his has long been esteemed as curious, and is perhaps, 

 nearly as remarkable as the Corsican Granite*; which, al- 

 though differing somewhat in the contents, nevertheless 

 leads towards a similar construction, and may be as difficult 

 to account for. This specimen also much resembles the 

 Carbonate of Lime, represented at tab. 144. It is yet the 

 more extraordinary, as it is a large separated almost insulated 

 stone lying on the surface of a field at Scorrier-House, be- 

 longing to our kind friend Mr. Williams, where it is only 

 known, and to whose friendship I am indebted for the spe- 

 cimen showing the crimson, amethystine or pinkish Quartz. 

 With the other specimen I was favoured by Phil. Rashleigh, 

 esq. — It is somewhat imitative of some of the Haematitic 

 Iron Ores, which have many centres, and radii of different 

 lengths. See tab. 133. 



* Which will be figured ere long in Exotic Mineralogy. 

 YOL. IV. O 



