GEOLOGY AND SCENERY OF NORTHEAST COAST 9% 
colour flashed from the coarse, vein-like patches in the rock. 
With each changing angle of vision a new splendour of 
gorgeously tinted rays shot out of the finely contrasted dark 
gray of the general rock-surface. It is no wonder that every 
effort should have been made to market the stone. Yet, 
with all their resources, Tiffany and Company have had 
to decide against the success of the material as a gem. 
One of the chief difficulties in working the stone lies in 
its extremely brittle and cleavable nature, forbidding the 
production of a well-polished surface. The conditions of 
nature do not, however, prevent the collection of many 
uncut specimens of exceeding beauty. The finest material 
yet seen in the bed-rock occurs on or near Napoktulagatsuk. 
The settlers on the coast report abundant iridescent lab- 
radorite also on Mt. Pikey, southwest of Ford Harbour. 
A complete account of this interesting formation would 
necessarily involve a description of the other minerals 
composing the gabbro, but that would carry the reader far 
into the domain of the rock-specialist. 
The relative ages, areal distribution, and exact com- 
position of the hundreds of igneous rock-bodies between 
Belle Isle and Cape Chidley must be left almost entirely 
to future discovery. From the magnificent exposure of 
these terranes a splendid harvest can be promised to all 
geological expeditions to the coast. 
The Nain gabbro seems to have been “intruded” into 
the older rocks after the mountain-building, with its folding 
and crumpling, was nearly completed. This at least ap- 
pears to be the testimony of the rock-ledges themselves. 
If the gabbro had already been crystallized out before any 
considerable amount of the lateral crumpling still remained 
