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taining small chabazite crystals (length 2^^). The crystal form 

 is that of the fundamental rhombohedron: r(l0Tl}, rarely with 

 narrow faces of e{01Ï2}. There are occasional twin form- 

 ations about c{000l}. The crystals are greyish-white and 

 semi-transparent. 



Sydbræ in Scoresby Sund. A few fragments of basalt, 

 obtained from here, have chabazite in their vesicular cavities, 

 this mineral being sometimes accompanied by apophyllite and 

 thomsonite. The crystals are 2 — b^^ long and are all in the 

 form of the fundamental rhombohedron; there are a few twins 

 about c{000l}. 



Gaase fjord in Scoresby Sund. Many fragments of 

 rock were found both on the north and south sides of Gaase- 

 fjord, all containing chabazite, either by itself or in association 

 with other zeolites. The fragments were all obtained from 

 detritus-cones or moraines and, in the latter case, it naturally 

 is difûcult to determine whence they originated. The specimens 

 obtained from the different sides of the bay seem to differ from 

 one another and will, therefore, be described separately. 

 t) The north side of the bay: — the numerous fragments 

 obtained from the north side were found in a moraine. 

 Most of these contain mainly thomsonite in the form of 

 spheres or incrustations, the surface of the mineral in the 

 latter case being studded with a few chabazite crystals. In 

 other blocks are cavities filled exclusively with chabazite. 

 The length of the crystals varies from 3 — S^^. The fun- 

 damental rhombohedron r(l0Tl) is the commonest crystal 

 form; the other forms with the narrow faces mentioned 

 above occur more rarely. Twins occur about c(000l} and, 

 less commonly, about r(lOÏl). The crystals are usually 

 semi-transparent and greyish. 

 2) Southside of bay. The fragments from the south side of 

 the bay contain as a rule chabazite only. This mineral is 

 sometimes found in crystals, resembling exactly in form and 



