OF THE FAROE ISLANDS. 235 



prism are all streaked, and the terminations pearly ; 

 these crystals appear to have but one cleavage, which 

 is at right angles to the axis, and extremely distinct. 



2. The same ; slightly truncated on all the solid angles. 



3. The same ; with the truncation on the angles somewhat 



deeper ; a small four-sided facet remaining on the sum- 

 mit, forming a truncated pyramid. 



In other specimens I have found the apex complete, 

 producing a very distinct sharp-pointed pyramid *. 



We here likewise found radiated'and amorphous mesotype ; 

 also in most delicate minute acicular fibres. 



Chabasie occurred here only in very small crystals ; but 

 towards the southern extremity of Nalsoe, ,we found it in 

 very large crystals, some of them at least an inch in diame- 

 ter ; they were imbedded in a very tough rock, and, being 

 naturally brittle, we were unable to detach them. 



From the southern point of Nalsoe, a portion of the rock 

 was removed some years ago to Kongsberg in Norway, for the 

 purpose of extracting the native copper dispersed through it ; 

 this, however was not found to answer, from the small quanti- 

 ty it produced. Another spot was also pointed out to us as 

 affording copper, on the east side of the island, a little north of 

 a small detached rock called Kabelen, and not very distant from 

 where we first saw it. 



Gg 2 i 



* This variety has been referred by Hauv to the species Mesotype. From 

 the great respect I entertain for the opinions of that distinguished mineralogist, it 

 is with reluctance I venture to place it under a different name. It is not, how- 

 ever, without due consideration that I have done so : my reasons I shall detail 

 more fully, when speaking of the Crystallised Mesotype. 



