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Malachite; re-examination of crystal structure


, : Malachite; re-examination of crystal structure. Acta Crystallographica 4, Part 3(Pages 200-204

The cell constants of malachite, Cu (sub 2) (OH) (sub 2) CO (sub 3) , are a = 9.48, b = 12.03, c = 3.21 A., beta = 98 + or -1/2 degrees . The space group is P2 (sub 1) /a, with four molecules in the unit cell. The revision indicates that each of the two types of Cu atoms has four (coplanar) nearest neighbors and two more at a greater distance completing a distorted octahedral group rather than five nearest neighbors at the apices of a trigonal bipyramid as indicated by previous work.

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DOI: 10.1107/s0365110x51000714


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