KORTA KASS 
62 Penta Jäskole | (EXUÉ SM 
abundant than in the other types of the sviatonossites that 
will be described later on. 
Hornblen de. The occurrence of hornblende as homo- 
axially arranged inclusions in the pyroxene has already been 
mentioned. The hornblende has no independent occurrence 
in the sviatonossites, but in the form of inclusions it is 
invariably present. Its quantity is variable. In some instan- 
ces large parts of the pyroxene crystals are made up of the 
amphibole, in others it may be present merely in traces. 
The hornblende has the optical arrangement of the common 
hornblende: 2-= 5, y :c='202 to. 25”; and a blusöster 
colour on y. 
This amphibole, intergrown with the pyroxene, might be 
supposed to be a secondary product from the alteration of 
the pyroxene, but I cannot find any evidence for such a 
hypothesis and must therefore regard both these minerals 
as having originated contemporaneously. 
Now I have mentioned all the constituents occurring as 
regular ingredients in the porphyritic svaitonossite and also 
found in the analyzed specimen. Some others of a more 
occasional nature are still to be noted. 
Calcite was foundin many sections, either in the granular . 
feldspar mass or within the groups of the mafic minerals, 
closely associated with the garnet. This constituent occurs 
in quite fresh specimens and there are no facts to indicate it 
to be of secondary origin. 
Biotite is exceedingly rare and when occurring is quite 
subordinate in the sviatonossites. It forms minute flakes 
sparingly scattered in the feldspar mass. 
The aplitic sviatonossite. 
As representative of the aplitic type of sviatonossite 
I selected a specimen from topographical point 59 B. The 
analysis was executed by the present writer EN the following 
results: 
NRA ENE E Rn FIA NER re 
EE MR SUR CASES SUR IMNE p BIN Far SA SSR ASTA SIN 
I Må Nå 
EP en Re 
I 
