Redetermination of olivenite from an untwinned single-crystal

Chen Li, Hexiong Yang, Robert T Downs

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The crystal structure of olivenite, ideally Cu2(AsO4)(OH) [dicopper(II) arsenate(V) hydroxide], was redetermined from an untwinned and phosphate-containing natural sample, composition Cu2(As0.92P0.08O4), from Majuba Hill (Nevada, USA). Olivenite is structurally analogous with the important rock-forming mineral andalusite, Al2OSiO4. Its structure consists of chains of edge-sharing, distorted [CuO4(OH)2] octa-hedra extending parallel to [001]. These chains are cross-linked by isolated AsO4 tetra-hedra through corner-sharing, forming channels in which dimers of edge-sharing [CuO4(OH)] trigonal bipyramids are located. The structure is stabilized by medium to weak O - H⋯O hydrogen bonds. In contrast to the previous refinements from powder and single crystal X-ray data, all non-H atoms were refined with anisotropic displacement parameters and the H atom was located.

Original languageEnglish (US)
JournalActa Crystallographica Section E: Structure Reports Online
Volume64
Issue number9
DOIs
StatePublished - 2008

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Powders
Minerals
Hydrogen
Phosphates
X-Rays
Single crystals
arsenates
Atoms
single crystals
Dimers
hydroxides
atoms
Hydrogen bonds
phosphates
Crystal structure
Rocks
dimers
minerals
rocks
hydrogen bonds

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Structural Biology

Cite this

Redetermination of olivenite from an untwinned single-crystal. / Li, Chen; Yang, Hexiong; Downs, Robert T.

In: Acta Crystallographica Section E: Structure Reports Online, Vol. 64, No. 9, 2008.

Research output: Contribution to journalArticle

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