64 A List of Minerals and Organic Remains. 
Chalcedony.--Near Gravel Point, (Lake Superior,) in 
clay porphyry, in veins. At Points Gargantua and Mar- 
moaze, and in the district of the Mammelles, in that lake, 
as botryoidal coatings to druses in amygdaloid. Pi) 
Carnelian.—District of Gaspé, four hundred and fifty 
miles below Quebec, in rolled masses, white, red, yellow, 
brown; color uniform or in clouds ; transparency and lus- 
tre excellent. In the amygdaloid, and its accompanying 
conglomerate, of Lake Superior. Its usual color is deli- 
cate red. 
Fortification Agate—Lake Huron, imbedded in rolled 
masses of amygdaloid. Gaspé, in pebbles on the sea-shore. 
In the porphyry of Lake Superior, and plentiful, large and 
fine, in the amygdaloid of the latter lake. 
Striped Jasper.—North-west of Lake Huron, as nodules 
in transition quartz rock—grain fine, color good, red, 
brown, yellow, green, white, black. On the north shore 
of Gun-flint Lake, and in the East Lake of the Height of 
Land, between Lake Superior and Hudson’s Bay, both 
about seventy miles from the Grand Portage of Lake Su- 
perior, are considerable deposits, in trap, of jasper; in the 
first mentioned place red, with rusty brown spots, and, in 
the East Lake, marbled in a beautiful manner with green 
and red. 
Common Jasper—is present with the striped variety of 
Lake Huron. 
Pitchstone.x—In Michipicoton Bay of Lake Superior, I 
found large rolled masses, rendered porphyritic in parts 
by glassy feldspar. Itisjet black. The fixed rock of the 
locality is greenstone; but those of the opposite (southern) 
shore of the Bay are amygdaloid and sandstone. 
Fibrous Prehnite.—-At Point Marmoaze, in Lake Supe- 
rior, a8 small mammillary coatings on druses, and in amor- 
phous masses. Major Delafield found this mineral in the 
Pay Plat of this lake. The color is fine, and the other 
characters distinct. 
Radiated Zeolite—Gargantua. Point Marmoaze, in 
amygdaloid. At the former place, brownish red, and 
bright flesh red, and at the latter, green also. The brown- 
ish red variety is imbedded in the trap, without the inter- 
vention of any other mineral ; the other in masses of calc. 
