derived
from the trap of Michipicoten Island, Ont. They occur on St. Ignace and
Simpson's Islands, Ont., on the former only as nodules in the trap.
Both chalcedony and agate occur as veins filling dislocations and
cracks which penetrate the trap. In the Thunder Bay district they are
associated with amethysts, occurring also as pebbles. Although these
agates are often of rich color, and are beautifully veined, they are
rarely over 2 inches across. Many are sold to tourists for ornaments,
and a greater number could probably be disposed of if more attention
were given to cutting and polishing them. As natural agates, their
color is exceptionally fine. Nearly all the large agates sold in this
region are from abroad as well as of foreign coloring and cutting.
Agate pebbles known as Gaspe" Pebbles are found in the conglomerate of
the Bonaventure formation, on the Baie des Chaleurs, Que., and along
the shore of Lake Superior, in the vicinity of Goular's Bay, and
especially on the St. Mary's River. Handsome agate and chalcedony in
nodules and veins are of frequent occurrence on the south shore of the
Bay of Fundy, between Digby and Scott's Bay, N. S. Large masses of
agate have frequently been found on this coast. Gesner mentions a mass
of 40 pounds weight, made up of curved layers of white,
semi-transparent chalcedony and red carnelian, forming a fine sardonyx.
A mass showing distinct parallel zones of cacholong, white chalcedony,
and red carnelian, was found a few miles east of Cape Split, N. S. When
polished it resembles an aggregation of circular eyes, and hence the
name eye-stone, or eye-agate, is applied to it. At Scott's Bay, N. S.,
large surfaces of rocks are studded with these minerals. Specimens are
also found at Blomidon and at Partridge Island, N. S. Fine agates and
carnelians occur at Digby Neck, Wood-worth's Cove, and at Cape
Blomidon, N. S. Agate, chalcedony, and carnelian are also found in New
Brunswick, at Darling Lake, in Hampton, near the mouth of the
Washdemoak River, in Dal-housie, and on the Tobique River, in Victoria
County. A blue chalcedony, rich brownish-green by transmitted light, is
mentioned by How, from Cape Blomidon, N. S. Agate often occurs in
layers, forming an onyx, in the Bay of Fundy and Lake Superior regions.
Beautiful specimens are found at Two Islands, Cumberland County, near
Cape Split, at Scott's Bay
