Annual report . river and had it examined by 5 (ii) 42 Bureau of Mines No. 4 Prof. H. H. Croft, of Toronto University. In Prof. Crofts opinion it was nearlyif not quite, equal to the Cornish clay used in the manufacture of English porce-lain. ^ These deposits were visited in 1903 by J. Mcintosh Bell, who mentionsthem in his report.^ A chemical analysis is given in this report, but no physicaltests appear to have been made. A large section of the fire-clay deposits on the Missinaibi, above the mouth ofthe Wabiskagami river, were examined and staked by Messrs. H. Curran and W. , of
Annual report . river and had it examined by 5 (ii) 42 Bureau of Mines No. 4 Prof. H. H. Croft, of Toronto University. In Prof. Crofts opinion it was nearlyif not quite, equal to the Cornish clay used in the manufacture of English porce-lain. ^ These deposits were visited in 1903 by J. Mcintosh Bell, who mentionsthem in his report.^ A chemical analysis is given in this report, but no physicaltests appear to have been made. A large section of the fire-clay deposits on the Missinaibi, above the mouth ofthe Wabiskagami river, were examined and staked by Messrs. H. Curran and W. , of Montreal, in 1911. In 1916 the attention of C, M. McCarthy, of Elk Lake, was directed to certainpeculiar clays on the bank of the river during a journey up the Mattagami fromJames bay. Mr. McCarthy revisited and staked claims on the deposit in the fol-lowing year. He also collected samples of all the various beds he could find byboring and trenching, and submitted them to the writer for testing. The results of. Photo bj M. r. Williams. View of east bank of the Mattagami river below Long portage. Mesozoic fire clays outcropalong the low part of the bank between the trees and the water. The high woodedportion of the bank is mostly composed of boulder clay. the tests on these clays were published in the Summary Report of the MinesBranch for 1918, in which it was stated that one of the beds proved to be the mostrefractory fire clay yet found in Canada. The occurrence of this high grade clay was verified by the writer during a visitto the locality in August, 1919. The fireclays outcrop at intervals from beneath the river wash along the stripof sloping bank between low and high water levels, the greatest vertical height towhich the clays rise being about eight feet. ^Report of E. B. Borron on his journev to and from Moose Factory in 1880. Ont. , 1881. = Ont. Bur. Mines, Vol. XIII, Pt. I, 1904. 1920 Clay and Shale Deposits of the Abitibi and Mattagami Rivers 43 Above this
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectminesandmineralresou
