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OBSIDIAN. 273 In flcx-tz country, it appears to be associated with trap rocks, in the form of beds or veins. Geographic Situation. Em ope.—This singular mineral is fouml in different farts of Europe. The island of Iceland, so rnn.rk.Me on account of its volcanoes and hot spnogs, contains beds of this subspecies of obsidian. According to Shu.n.cher, a bed of obsidian two feet thick, occurs in the Eordafioid Syssel in Iceland ; and Sir George Mackenzie, during journey through that remote and desolate country, observed a great moss of obsidian, which appeared to him to be part of a stream that had flowed from a volcano. It is also found in the mountains of Tokay in Hungary, imbedded in pearlstol.c-porphyr, 1 and in the same geog- nostic situation in Spain. It occur, severalI ot he island, in the Mediterranean, a. Milo, Cand.a, and the '^tc’prdingtoCordierandlluniboldt.itoc , -i dip l’eak of Tenenff; and Dr curs at the summit ot the r ea r , ,,, I'orster observed it in great quantity in the sic of Ascen sion. It is said also to occur in the Island of Malagas ear. , , Asia.—Siberia; and near the town Goda, twenty wen, s from Teflis in Georgia. America.—Humboldt and Sonnenschmidt found beds and mountain-masses of obsidian at great heights, >ot i in Peru and Mexico. . Polynesia.—Dr I’orster found obsidian in several^ tne islands in the South Sea, as Easter Island, and Rogge-, wein’s Island. o Vats. Vol. I. * Vid. Account of the Obsidian of I.ipari, by SpnUunzu”' *> ^ ^ ^ ^ uml Colonel Imi'ic, in the ?tl volume of the Memoir, of the