II. Deposits that do Not Occur in the Gabbi 



As already mentioned, we shall describe first those that 

 the immediate neighbourhood of the gabbro. 



Krageroe. 



This deposit of apatite, formerly the richest in Norws 

 been already briefly described by Joh. Dahll. As a d< 

 description of the apatite veins of Krageroe, the fruit of 

 years' research, is expected from our distinguished ge 

 Tellef Dahll, we shall call attention only to those detail 

 seem to be of value for the comprehension of the other de 

 Mr. Tellef Dahll was our experienced guide. 



The Krageroe deposits may be generally described as se 

 tions of hornblende, containing apatite. They yielded 

 years 1854-58 about 5,200 tons of apatite, of the value of 

 $112,500 ; for the price of apatite was then lower thar 

 There were three large segregations, lying at the base of i 

 The peak of the cone consists of gabbro, which is only 

 paces removed from all the veins. 



In the Vuggens mine a vein seven feet thick, with a slig] 

 here penetrates partly the granite and partly the strata 

 primary rocks. Both sides of the vein consist of a 

 finely granular hornblende, containing small lumps of a 

 The middle of the vein is occupied by coarsely radiated 

 blende enclosing lumps of apatite up to two feet in dia 

 which sometimes have a plainly hexagonal section. 

 boundary between the finely granular and the coarsely ra 

 hornblende there sometimes occurs, especially in the foo 

 rutile along with a greenish-grey steatite and an impe 

 fibrous mineral resembling asbestos. The two latter are som 

 combined together into large radiated masses, projecting t( 

 the middle of the veiu, and having a contorted internal stri 

 In their combination large crystals of hornblende occur, 

 principal axis lies in the same direction as the fibres 

 asbestos-steatite. In the coarsely radiated hornblende 

 middle of the vein there occur irregular geodes, into 

 the ends of the hornblende crystals project, generally coat 

 quartz and calcspar ; the latter being the younger deposit, 

 hornblende crystals are sometimes broken and cemented 

 with quartz. 



