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Table of Contents
December 2004
Volume 81, Issue 12
Pages 1687-1819
About the Cover:
Obtaining copper metal from the mineral malachite-the old-fashioned way. Yee, Eddleton, and Johnson describe a lab experiment, "Copper Metal from Malachite circa 4000 B.C.E.", in which students roast malachite, reduce the intermediate with carbon, and then characterize the copper product. The beads in the foreground show the three stages of this reaction (left to right) from the green malachite starting material [Cu2CO3(OH)2], to the black copper(II) oxide intermediate, to the final copper metal product.
