171 



the more southerly occurrences on lliis coast where no alnöite 

 has been pointed out. We find, particularly, in close connection 

 with the pure limestone veins, lenses, or irregular patches, of 

 a green rock-mass, that consists principally of a pyroxene 

 mineral, partly in orientated penetration with green hornblende. 

 Furthermore, both the limestone and the green rock are tra- 

 versed by red, granitic masses, and it was my opinion that 

 this was a young intrusive granite that had broken through the 

 limestone and in some places had penetrated into it, forming 

 in part a breccia (exclusively with the green pyroxene rock), 

 in part narrow injected veins. 



But these questions demand a closer examination from 

 nature, and at the same time the question as to whether this 

 light rock is a true granite or simply a curious development 

 of other rocks, should be solved. What I have seen of it 

 microscopically resembles the other granites of the district: 

 apparently an old, pressed, almost gneiss-like rock. When 

 large masses of it come in contact with limestone its appear- 

 ance is altered, and it gives a more basic impression. 



In addition to what has been mentioned, even the purest 

 limestone contains a number of foreign minerals, which for 

 the most part could not be recognized under the microscope 

 without a close examination. Particularly noticeable is a mineral 

 with the interferential colours of titanite, but, as it seems, with 

 still stronger refraction. Then we come across a sap-green 

 hornblende, that sometimes appears implicated with quartz; and 

 in particularly abundant quantities a light malacolite-like pyr- 

 oxene mineral. One of the bails resembling a concretion con- 

 sists of iron pyrite (or markasite). 



I have had at my disposal neither the time nor the material 

 for comparison necessary for a more exact study of those min- 

 erals, but hope that they will later be subjected to examinalion 

 by 8ome specialist^). 



') Cfr. the appendix at the end of this paper. 



