OF THE ROCKS OF LAKE SUPERIOR. 249 
485. Same as No. 484; but of a darker red colour. Contains patches of chlorite, 
and irregular lumps of flesh-coloured felspar. 
486. Metamorphosed siliceous shale —colour, dark reddish brown; fracture, 
uneven, shaly; fine granular. Resembles the siliceous grits of the clink-stone type 
on the north shore of Lake Superior. 
487. Same as No. 486. More highly metamorphosed ; colour, brownish red ; 
fracture, smooth and even; subporphyritic; contains patches of chlorite. 
488. Gray oxide of copper, with earthy green carbonate. 
489. From a vein at Dr. Borup’s mine—epidote and quartz. Some of the epi- 
dote is crystallized, and some is massive. 
490. From a N. 5° E. dike—colour, purplish red; very fine-grained; contains 
streaks and patches of chlorite ; weathered surface, iron-shot; great specific gravity. 
491. Greenstone (?)—colour, gray; numerous small green points, made by grains 
of hornblende. This rock resembles the shaly greenstones of Kinechigakwag Creek, 
and may possibly be a sandstone, metamorphosed by contact with a dike, which is 
only twenty-five feet distant. 
492. Metamorphosed sandstone—colour, reddish gray ; crystalline. 
493. Syenitic granite—tolerably fine-grained ; felspar predominant, flesh-coloured. 
494. Gneiss—fine-grained ; colour, gray. 
495. Syenitic gneiss—with pale reddish felspar, and black mica; traversed by 
granite veins. 
496. Coarse quartzose granite, in large veins. 
497. Syenite—colour, reddish, in consequence of flesh-coloured felspar predomi- 
nating. 
498. Syenite—felspar, white ; hornblende predominates, giving a dark appearance 
to the rock. 
499. Hornblende rock—a compact compound of quartz and hornblende, the 
former predominating; very fine-grained ; fracture uneven, inclining to splintery ; 
colour, gray. 
500, 501. Quartzose veins in No. 499, with nodules and seams of hornblende and 
iron pyrites. 
502. Hornblende rock—very compact; colour, gray; uneven fracture; grains of 
iron pyrites disseminated through the rock. 
503. Porphyritic syenite—flesh-coloured felspar, giving a reddish hue to the 
rock ; quartz and hornblende equally divided; irregular fracture ; felspar predomi- 
nates. 
504. Syenitie granite—felspar predominant, and flesh-coloured ; tolerably fine- 
grained. 
505. Gneissoid rock—colour, dark gray; graduates into mica slate. 
506. Slaty hornblende—fine-grained ; colour, light green. _ ah > 
507. Micaceous clay slate—very fine-grained; the mica thinly disseminated ; 
colour, grayish green. 
508. Siliceous slate—colour, gray ; very hard ; fracture, splintery ; minute grains 
of iron pyrites sparsely disseminated sap it. 
