. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. ;;i-paiBT)t, j-inrl at-tiuaes to be. iivkUjj^^lizedshbstattce^^l'hese rockn ueeriaw Serias, and 3^6 tilway^ very >t' thestV rocks, as already stat«!t shbed-cllalbase, t^lie^: ,base OFli flow, wli ' ashWl of K if rocks, Pump ^^ gesture, £oSd a {^pnc characters, (tho subordiiWite > â ence inp'ounded arai. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these

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. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. ;;i-paiBT)t, j-inrl at-tiuaes to be. iivkUjj^^lizedshbstattce^^l'hese rockn ueeriaw Serias, and 3^6 tilway^ very >t' thestV rocks, as already stat«!t shbed-cllalbase, t^lie^: ,base OFli flow, wli ' ashWl of K if rocks, Pump ^^ gesture, £oSd a {^pnc characters, (tho subordiiWite > â ence inp'ounded arai. 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