118 



Turner Sund. The specimens were derived from the 

 vicinity of the mainland. One label was marked «opposite the 

 landing-place», the others bore no definite statement of loca- 

 lity. They consisted of partly coherent amygdaloids of an 

 irregular shape and without surrounding rock, numerous stilbite 

 crystals occurring in them. The rock, which is now quite 

 disintegrated was probably tufa. The stilbite is unaccompanied 

 by other zeolites, though sometimes irregularly formed crystals 

 of clear calcite are found in the cavities. The length of the 

 crystals is generally 2— 8°^"^, and they occur in plates flattened 

 parallel to & {OIO}. Other forms which also occur are: c(OOl) 

 and w{ll0}; more rarely e{01l} as very narrow faces. The 

 crystals are rather cloudy and their colour is whitish, tinted 

 slightly with brown or red. 



Turner Ö. 



1) The inner wall of Fyrböderdal. From here we have 

 small bright crystals, size 1 — 2^^, in the cavities of a 

 black basalt. The crystals are in flattened plates of the 

 ordinary form. 



2) The summit of Fyrböderdal (700 metres above sea-level). 

 Here the stilbite occurs in irregular cavities, probably in 

 tufa. It is associated with natrolite and a few irregularly- 

 formed calcite individuals. The stilbite crystals may attain 

 a size of 2 cm. but are rarely at all freely developed, as 

 the cavities are, as a rule, completely filled up by them. 

 The crystals are in the form of plates, flattened parallel 

 with è {oio). Other predominant forms are c{00l} and 

 w(ll0}; generally also e{0ll} and ^{l30} in the form of 

 narrow faces. The colour is a pale reddish-white ; the 

 degree of transparency slight. 



Кар Brewster. In a single tufa cavity some large (up 

 to 3 cm.) stilbite crystals were found, together with some small 

 heulandite crystals. The stilbite crystals are somewhat sheaf- 



