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  • ...ty in grey to black and multicoloured Athabasca sandstones and shales as a coating on quartz grains, as disseminations in the clay matrix and as veins; and wi ...ng-reef, isolated bioherms and reef-fringed carbonate bank; Slave Point Fm barrier-reef, platform reefs, shoals and carbonate banks. <ref name=":2">Perry, R.
    18 KB (2,698 words) - 14:41, 13 December 2020