123 



The crystals have bright faces and are rather well-devel- 

 oped. They are of a pale reddish colour. 



2) Heiilandite crystals were also found in the cavities of a 

 reddish-brown compact basalt, enclosed in a thin layer of 

 pale-green celadonite. The length of the crystals is about 

 5mm The form mostly resembles that shown in fig. 8. The 

 faces are bright, well-developed, and the crystal fairly clear, 

 transparent and colourless. 



3) In a pale-grey dolerile rock numerous cavities were found 

 with quite small heulaudite crystals (length about l^^). The 

 walls of the cavities are covered with a thin layer of bluish- 

 green celadonite. The form closely resembles that shown 

 in fig. 8, but c{00t) is far less developed. The faces are 

 rather curved: the crystals are clear and colourless. 



Chabazite. 



Chabazite has only been found in a few places, but in one 

 of these, namely in Scoresby Sund it is found in such large 

 quantities, as to far exceed, in total amount, all the other zeol- 

 ites. The chabazite crystals, however, are always of rather 

 insignificant size and crystallographically very simple. 



Henry Glacier on the medial moraine. Here chabazite 

 was found in the cavities of a brownish-coloured basalt, which 

 also contained several other zeolites such as stilbite, heulandite, 

 levynite and Ihomsonite. The length of the crystals is gener- 

 ally about 2'"'", but may be as much as b^^. The crystals 

 consist, as a rule, exclusively of the fundamental rhombohedron, 

 /•{lOTl} but a few crystals also have narrow faces of a{ll20}, 

 .s-{022l} and e{01Ï2}. Penetration twins occur twinned about 

 с {0001}; in a few cases, twin formations about г{|ОП} are 

 also found. The crystals are usually colourless and rather 

 transparent; the faces are. as a rule, well-developed and bright. 



Henry Land east side. The specimen found here con- 

 sists of a single small fragment of basalt, with a cavity con- 



