. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. 8 OP LAKE 8UPBEI0E. ogcopic study of '^• eenaw Series—< A'Juiipsi mi,] t, Uacroaoopla <ihai«. tenths inch if ' eter. Ked p- ritio feldspaii^ :»»«*.< very abundant, two- tenths to three- tenths inch in lengtb- Close to 1838, 1846(2, 1970, and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Irving,
. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. 8 OP LAKE 8UPBEI0E. ogcopic study of '^• eenaw Series—< A'Juiipsi mi,] t, Uacroaoopla <ihai«. tenths inch if ' eter. Ked p- ritio feldspaii^ :»»«*.< very abundant, two- tenths to three- tenths inch in lengtb- Close to 1838, 1846(2, 1970, and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Irving, Roland Duer, 1847-1888. Washington, Govt. Print. Off.
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectgeology, bookyear1883
