| Reference Type | Journal (article/letter/editorial) |
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| Title | Redetermination of conichalcite, CaCu(AsO4)(OH) |
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| Journal | Acta Crystallographica Section E Structure Reports Online |
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| Authors | Henderson, Rachel R. | Author |
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| Yang, Hexiong | Author |
| Downs, Robert T. | Author |
| Jenkins, Robert A. | Author |
| Year | 2008 (August 6) | Volume | < 64 > |
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| Page(s) | i53-i54 | Issue | < 9 > |
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| Publisher | International Union of Crystallography (IUCr) |
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| URL | |
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| DOI | doi:10.1107/s1600536808024173Search in ResearchGate |
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| Generate Citation Formats |
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| Original Entry | Henderson, R.R., Yang, H., Downs, R.T., Jenkins, R.A. (2008) Redetermination of conichalcite, CaCuAsO4)(OH). Acta Crystallographica: E64: i53-i54. |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 16106370 | Long-form Identifier | mindat:1:5:16106370:2 |
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| GUID | 0 |
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| Full Reference | Henderson, Rachel R., Yang, Hexiong, Downs, Robert T., Jenkins, Robert A. (2008) Redetermination of conichalcite, CaCu(AsO4)(OH). Acta Crystallographica Section E Structure Reports Online, 64 (9). i53-i54 doi:10.1107/s1600536808024173 |
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| Plain Text | Henderson, Rachel R., Yang, Hexiong, Downs, Robert T., Jenkins, Robert A. (2008) Redetermination of conichalcite, CaCu(AsO4)(OH). Acta Crystallographica Section E Structure Reports Online, 64 (9). i53-i54 doi:10.1107/s1600536808024173 |
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| In | Link this record to the correct parent record (if possible) |
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| Abstract/Notes | The crystal structure of conichalcite [calcium copper(II) arsenate(V) hydroxide], with ideal formula CaCu(AsO4)(OH), was redetermined from a natural twinned specimen found in the Maria Catalina mine (Chile). In contrast to the previous refinement from photographic data [Qurashi & Barnes (1963). Can. Mineral.
7, 561–577], all atoms were refined with anisotropic displacement parameters and with the H atom located. Conichalcite belongs to the adelite mineral group. The Jahn–Teller-distorted [CuO6] octahedra share edges, forming chains running parallel to [010]. These chains are cross-linked by eight-coordinate Ca atoms and by sharing vertices with isolated AsO4 tetrahedra. Of five calcium arsenate minerals in the adelite group, the [MO6] (M = Cu, Zn, Co, Ni and Mg) octahedron in conichalcite is the most distorted, and the donor–acceptor O—H...O distance is the shortest. |
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