TAB. CXVI1I. 



STRONTIA sulphata. 

 Sulphate of Strontian. 



Div. 1. Crystallized. 



1 he plated Sulphate of Strontian here figured is in a sort of 

 sandy matrix, and was the first specimen I received from 

 Mr. Clayfield. It is like that which I first had from 

 Mr. Tobiiij excepting that the latter was in much larger 

 pieces, without matrix, and nearly white. The crystals 

 are mostly confused^ yet are occasionally found very neatly 

 determined at two or three sides, as in this specimen. 



The geometrical sketch at the bottom shows the bevelling 

 at the corner, between the primitive faces. 



This kind is chiefly found at Redland near Bristol. 



VOL. II. 



