The crystal structures of adamite and paradamite
1977 Volume 8 Issue 6 Pages 320-328
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1977 Volume 8 Issue 6 Pages 320-328
The crystal structures of adamite, Zn2(OH)(AsO4), and its dimorph, paradamite have been refined. Adamite is the andalusite-type structure, and paradamite is isostructural with tarbuttite. The structures of these two minerals are compared. Mean bond lengths of these structures are:
| adamite | paradamite | ||||
| As–O | 1.69Å | 1.68Å | |||
| Zn(VI)–O | 2.13 | – | |||
| Zn(V)–O | 2.04 | { | 2.066 | ||
| 2.06 | |||||
