. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. Pigi ZlyalH-vc- auntie. Diil-uin.,. Or^iKayy lifini. Scale, zo diarne^erf. a7«y o-r coTfott'ctv quarit(3J, nTii'eli tome'itTnei faTma a-reaf; wyali^ie'jiteuSamorphtf'fJ ' a-u.^ ; cAl<i-rzie4S'/ , -mag-naiiie-H/.. 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

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. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. Pigi ZlyalH-vc- auntie. Diil-uin.,. Or^iKayy lifini. Scale, zo diarne^erf. a7«y o-r coTfott'ctv quarit(3J, nTii'eli tome'itTnei faTma a-reaf; wyali^ie'jiteuSamorphtf'fJ ' a-u.^ ; cAl<i-rzie4S'/ , -mag-naiiie-H/.. 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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Keywords: ., bookcentury1800, bookdecade1880, booksubjectgeology, bookyear1883