236 DESCRIPTIVE CATALOGUE 
263. Belongs to the same series as No. 262, but was derived from more earthy 
beds. Resembles hornstone at some localities, and quartzite at others. Thin edges 
of small fragments translucent. 
264. A still more earthy bed of No. 262—very amygdaloidal; cells small, oval, 
and filled with zeolites and calcareous spar. Colour, purplish red. 
265. Greenstone—colour, dark gray, nearly black; crystalline; the hornblende 
predominating. 
266. Siliceous shale—same as Nos. 195 and 242; altered, but bearing all the 
characteristics of those rocks. : 
267. Same as No. 266—highly metamorphosed. Some of the beds are very com- 
pact, highly crystalline, and of a pinkish-gray colour, resembling, in general aspect, 
some of the quartzites, especially in near contact with the trap dike. Occasionally 
presents the appearance of the top beds of the “Great Palisades,” containing small 
lumps and scales of quartz, which render it porphyritic. 
268. Siliceous shale—quartzose ; colour, gray ; somewhat altered; otherwise does 
not differ from the shales of “ Hat Point,” below Grand Portage Bay. 
269. Same as No. 268, in all respects. 
270. Same as No. 268, but much metamorphosed. Colour, reddish gray; very 
hard; some of the layers flint-like ; in some places, loses its gritty appearance, and 
has a smooth, even fracture across the laminz, but is still granular between the 
layers. It is precisely like the base of the Palisades, except in not being porphy- 
ritic. : 
271. Highly metamorphosed siliceous shale—colour, grayish-red ; fracture smooth 
in one direction, somewhat splintery in another; very hard; has a dull waxy 
lustre, like pitchstone ; in some places, the rock could not be distinguished in hand 
specimens from the quartzites of Wisconsin; in others, it is like jasper. Belongs 
to the same beds as No. 270. 
272. Anorthite rock—coarsely crystalline ; colour, greenish and greenish white, 
with some crystals of flesh-coloured felspar. A very few small crystalline frag- 
ments of hornblende are found in it at some spots. In the forceps, fuses to a white 
glassy bead full of blebs. 
273. Same as No. 271, in contact with No. 272—jasperoid. 
274. Greenstone—hornblende predominates ; colour, nearly black ; coarsely crys- 
talline. Weathers with a rough surface, the felspar disintegrating fastest. 
275. Syenitic greenstone—a good deal of flesh-coloured felspar in it. Minutely 
crystalline; weathers with a tolerably smooth, rusty surface; fracture rough. 
276. Greenstone—coarsely crystalline; colour, dark greenish gray; contains 
some patches and strings of flesh-coloured felspar; weathered surface rough, and 
rusty-coloured ; the joints filled with magnesian minerals. 
277. A variety of greenstone—composed partly of hornblende, but mostly of 
felspar, which fuses, in small splinters, to a clear glass (sometimes a blebby one) 
like 272, but is much more difficult to fuse. Coarsely crystalline; colour, black 
and greenish yellow, as one or other constituent prevails. Weathers with a rough 
su , 
278. Greenstone—coarsely crystalline; hornblende predominates; colour black, 
