. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. ^pafite, large and ahmi lahradoriU; /eroua magu. long, twiniied \t- lage; ochre ; ma* i/uarfcr. Apatite! labradoriti' .⢠21 18 1 39 , , .. '^^â ««'^4' v^iVaiftK-^.ii. ^""Viwrf-V diaHofficou-7i<e,much tT^s â¢'^^i^aVs^Ac (Not sarveyed.). tocoarse; nearlf daae; auffite, sparse, highly blacli; nineh. nltf rcl, and flUcd vrith dn?*r ] 26 /teeji t 28 1 ^ -^^i«^5S3K,^arâ x«o-v9 Co Ol ii. j s from the ur. the fibrous, j. [â¢own, intense; rocks have bo he Geology oi g,ardec
. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. ^pafite, large and ahmi lahradoriU; /eroua magu. long, twiniied \t- lage; ochre ; ma* i/uarfcr. Apatite! labradoriti' .⢠21 18 1 39 , , .. '^^â ««'^4' v^iVaiftK-^.ii. ^""Viwrf-V diaHofficou-7i<e,much tT^s â¢'^^i^aVs^Ac (Not sarveyed.). tocoarse; nearlf daae; auffite, sparse, highly blacli; nineh. nltf rcl, and flUcd vrith dn?*r ] 26 /teeji t 28 1 ^ -^^i«^5S3K,^arâ x«o-v9 Co Ol ii. j s from the ur. the fibrous, j. [â¢own, intense; rocks have bo he Geology oi g,ardecl the hornl '//^m diabase â .^t the I. 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
