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Description and Analysis of a Mineral from Faroe, not before 

 examined. By Arthur Connell, Esq. F. R.S.Ed. 



{Read Jan. 6. 1834.) 



Some time ago a mineral was put into my hands by Mr Rose, 

 the intelligent mineral dealer of this city, the nature of which 

 was not known, although it had been conjectured to be a variety 

 of Mesotype. Mr Rose obtained it from Count Vargas Bede- 

 mar of Copenhagen, who brought it from the Faroe Islands, and 

 subsequently visited this country some years ago. A short che- 

 mical examination soon satisfied me that it differed entirely from 

 mesotype ; and having ascertained that it contained silica, lime, 

 water, and potash, and no notable quantity of alumina, I was led 

 to conjecture that it would prove to be a variety of apophyllite, 

 although, in that view, it would have presented very remarkable 

 deviations from the ordinary structure of that mineral. 



Some time afterwards, in the course of last autumn, I had 

 an opportunity of recognising, in the possession of Sir David 

 Brewster, a large mass of the mineral in question ; and as its 

 nature was quite unknown to Sir David, he thought it would 

 be a matter of some interest to have its chemical nature fully de- 

 termined, particularly with the view of ascertaining whether it 

 could possibly be of the nature of apophyllite. 



I accordingly proceeded to complete an analysis of it ; and 

 the result was, that it was found to differ from all other mineral 

 bodies with which I am acquainted. Its external and chemical 

 characters, as well as the steps and result of the analysis, are as 

 follows. 



The colour of the mineral is white, with an opalescent tint. 



