35 



TAB. CXIX. 



STRONTIA sulphata. 

 Sulphate of Strontian. 



Div. 2. Imitative. 



We have represented the following varieties of this curious 

 substance, to show those most generally known, at least in 

 Great Britain. 



The upper figure is from Aust Passage, near Bristol, and 

 its curved appearance renders it at first sight sufficiently 

 curious, besides its partaking of the blue and red colours. 



The striated Strontian in the middle figure seems to 

 answer to the name of Ccelestine, as Werner calls it, more 

 generally than the last, as it is here coloured. 



The fibres in this sort, which comes from Breslington, are 

 very straight, and somewhat laminated. 



e 2 



