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Specimen / extraction / copper / sample / limestone, white Specimen / extraction / copper / sample / limestone, white

One of a group of copper ores and other specimens illustrating the extraction of the metal - a sample of white limestone from Morenci quarry, Lower Carboniferous Age

Specimen / extraction / copper / sample / limestone, grey Specimen / extraction / copper / sample / limestone, grey

One of a group of copper ores and other specimens illustrating the extraction of the metal - a sample of grey limestone from Morenci quarry, Lower Carboniferous Age

Specimen / extraction / copper / sample / limestone Specimen / extraction / copper / sample / limestone

One of a group of copper ores and other specimens illustrating the extraction of the metal - a sample of limestone from Longfellow formation, Ordovician Age

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