DR EN: ÄN SAR SR mA SN nå Mag de 
Vaya b [STAS 2 digg 
88 "> Pentti Eskola. (LXHÉ 7 
anorthite is already chemically closely related to the skarn- 5 
rocks. The same may be said about cromaltite, a 
melanite-aegirite-augite-rock occurring near the Borolan 
laccolith. These rocks richest in lime of all igneous rocks 
known, will be mentioned in the discussion of the Sean | 2 
of the Sviatoy Noss rocks. 
The rocks of the Borolan laccolith, being probably more 
similar to the sviatonossites than any other rocks known, 
are variable in mineral and chemical composition and several 
specific names have already seen applied to signify them. 
Closely related as many of them are with the Sviatoy Noss 
rocks there is none among them whose name could be applied 
to the latter. Borolanite is defined as an orthoclase- 
melanite rock, while I e d m o rit e contains the same miner- 
als and also aegirite-augite. Both mineral combinations 
may be found on Sviatoy Noss, but they are not sharply 
defined separate types, deserving special names. The names 
of the Scotch rocks seem also therefore less adapted to 
general use for other occurrences, as these rocks show such 
peculiar alteration which is certainly a distinctive character 
of them. 
It seems therefore best to apply a new local name för 
the rocks studied; we have already used the word s vi a t o- 
nossite. It is not hoped that this name will attain 
any general use for other occurrences, but it may be pointed 
out that the sviatonossite can not be ineluded in any of the 
main classes, more than the borolanites or the malignites. 
If it should be called an dradite-syenite, this name 
would mean a rock that is not a syenite, but which has the 
constituents of a syenite and, moreover, andradite, whose 
presence gives it a radically different character. 
The contact-phenomena. 
Some phenomena observed at the boundaries of the 
sviatonossite mass being of particular importance for the 
explanation of the origin of this rock, I have reserved the 
AV OR SV ARE Tan ar 
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