205 



This type differs from tlie others on account of its greater 

 number of rhombohedral faces, of which the six, found on the 

 figure, namly ^{.5059}, о [\0U] , ø{404l}, d [022\] , f[OAib] 

 and r(01l2}, are rather common. Besides these (ОПЗ), 

 {088l} and {1120} are found on single crystals. {lOU} 

 exceeds by far the other rliombohedra in size and then comes 

 /■(0445}. The base is almost triangular, the breadth of the 

 whole crystal about twice the height. The crystals belonging 

 to this type are as a rule between ]'5 and 3 centimeters in 

 diameter. This type is found in all the 3 first mentioned 

 localities, South of the Firth of Tunugdliarfik. 



T-i/pe II. The crystals are flattened and their breadth 

 several times greater than their height. 



■ 



с 





-■ ""oV- 



--■■-■-■-7 



.;;;;;; ;d 





^ 



0" 



f 







Fig 6. Steenstrupite, type 11. 



The base hexagonal. The prism is not found and only 

 4 rhombohedra; of these o(l01l} and f/{022l} are predomi- 

 nant and almost equally well developed. 2; (4041) is somewhat 

 smaller and f (044o} is always very insignificant, but it is 

 seldom , that it is absent. To this type , the size of which 

 varies between 1 and 2 cm in diameter, belong the crystals from 

 Nunarsiuatiak and Agdlunguak. A smal part of the crystals 

 from Tutop Agdlerkofia belong mostly to this type, though in 

 several respects they are a transition to type I. They are all 

 of small size, 0'5 — 5 mm. 



Type III. The crystals classified under this type are of 

 about the same height and breadth, the base is triangular, but 

 in a position opposite to that of type I. 



