Description and Analysis of a Mineral from Faroe, not before 
ewamined. By Artruvur Connex, Esq. F.R.S. Ep. 
(Read Jan. 6. 1834.) 
Some time ago a mineral was put into my hands by Mr Ross, 
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 Varcas Brpe- 
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 Davin 
Brewster, a large mass of the mineral in question ; and as its 
nature was quite unknown to Sir Davin, 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. 
