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Ch. 13: Dominion of Canada

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264
GEMS AND PRECIOUS STONES IN THE
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
Ch. 13: Dominion of Canada Page of 364 Ch. 13: Dominion of Canada
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