98 M. FE. Wadsworth—Rocks of Newfoundland, 
Another diabase occurring near No, 850, and perhaps a por- 
tion of the same mass, is more coarsely crystalline with pinkish 
feldspars. At the western point enclosing Sargent’s Cove, a 
coarse-grained basaltic rock (867) occurs cut by fine-grained 
diabase dikes (866). 
The rock on the north side of Betts Cove is a diabase, 
which on the weathered surfaces shows spherulitic concretions 
of impure epidotic material. These concretions are seen to be 
a superficial phenomenon, for they diminish in size and amount 
in the interior. 
No. 963 from Little Bay Mine, is a greenish rock flecked by 
pinkish spots of alteration origin. nder the microscope the 
greenish section is seen to be from a rock entirely altered, a 
natural condition when it is realized that the dike from which 
it came forms the line about which is arranged the ore of the 
mine. The section is composed of an irregular confused 
granular aggregation of secondary epidote, chlorite, green and 
ite mica, quartz, feldspar, microlites, ete. The epidote and — 
chloritic and micaceous material predominate. This rock is — 
similar to some specimens in the collection from Sonora, 
Tuolumne County, California. 
Diorite. 
At Sargent’s Cove a coarse grained old basaltic rock, No. a 
is sed. 
of a dark greenish color and com 
section is composed of a confused mass of secondary greenish — 
he is led to regard all these coarse dioritic rocks as formed from — 
the alteration both of gabbros and coarse-grained diabases. 
Porodite. 
are filled with secondary materials it would be difficult some- — 
times to distinguish these melaphyr grains from some of the — 
We aes 
i ee fa ca 
