NOTES ON NORWEGIAN MINERALS 1-6. 143 



taken to have been, in this case also, laumontite, recorded 

 before from one locahty only, in Norway, viz. the veins of 

 Kongsberg. 



4. Laumontite from the Flaat Mine, Evje. 



A fresh mineral was found, in 1902, by C. Bugge, mining 

 engineer, close by Landsværk, in the Flaat Mine, belonging to 

 the Evje Nickel Works. A specimen kindly placed at my dis- 

 posal for description shows that the laumontite here has occur- 

 red in a cavity or fissure in the quartz-gabbro rock, in radiating 

 masses, from which only a few bigger individuals are protruding, 

 2 — 3 millimeter thick, of prismatic habit with jllOj and j201j. 



On one individual was measured the angle 93° 25' between 

 the cleavage faces (93° 44', Dana Syst. Min.). 



Younger than these are small, colourless calcite crystals. 



The mineral, colourless and transparent when collected, is 

 now milky, white with a faint pearly lustre on cleavage faces. 



5. Desmine from Tjovehedderen, Aardalsfjord, Sætersdalen. 



On the east side of the lake whose southern portion is 

 named Aardalsfjord, and about two kilometers from Byglands- 

 fjord railway station a cave in the rock is discernible, even from 

 the deck of the steamer. 



In a height of about 150 meters above the lake, and 

 just above the talus, below the steep wall of the gneissoid gra- 

 nite, a giant opeing resembling a doorway leads into Tjovehed- 

 deren, the thieves' cave. The roof is about 15 meters high 

 above the present bottom of débris at the mouth and from there 

 the bottom rises with a steep ascent to the back ground of 

 the cave. 



In the roof and the background as well as in patches on 

 both walls are seen the remains of the pegmatite mass, whose 



