| Reference Type | Journal (article/letter/editorial) |
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| Title | A new mineral, zincolibethenite, CuZnPO4OH, a stoichiometric species of specific site occupancy |
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| Journal | Mineralogical Magazine |
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| Authors | Braithwaite, R. S. W. | Author |
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| Pritchard, R. G. | Author |
| Paar, W. H. | Author |
| Pattrick, R. A. D. | Author |
| Year | 2005 (April) | Volume | 69 |
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| Issue | 2 |
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| Publisher | Mineralogical Society |
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| DOI | doi:10.1180/0026461056920242Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 243603 | Long-form Identifier | mindat:1:5:243603:0 |
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| GUID | 0 |
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| Full Reference | Braithwaite, R. S. W., Pritchard, R. G., Paar, W. H., Pattrick, R. A. D. (2005) A new mineral, zincolibethenite, CuZnPO4OH, a stoichiometric species of specific site occupancy. Mineralogical Magazine, 69 (2) 145-153 doi:10.1180/0026461056920242 |
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| Plain Text | Braithwaite, R. S. W., Pritchard, R. G., Paar, W. H., Pattrick, R. A. D. (2005) A new mineral, zincolibethenite, CuZnPO4OH, a stoichiometric species of specific site occupancy. Mineralogical Magazine, 69 (2) 145-153 doi:10.1180/0026461056920242 |
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| Abstract/Notes | AbstractTiny green crystals from Kabwe, Zambia, associated with hopeite and tarbuttite (and probably first recorded in 1908 but never adequately characterized because of their scarcity) have been studied by X-ray diffraction, microchemical and electron probe microanalysis, infrared spectroscopy, and synthesis experiments. They are shown to be orthorhombic, stoichiometric CuZnPO4OH, of species rank, forming the end-member of a solid-solution series to libethenite, Cu2PO4OH, and are named zincolibethenite. The libethenite structure is unwilling to accommodate any more Zn substituting for Cu at atmospheric pressure, syntheses using Zn-rich solutions precipitating a mixture of zincolibethenite with hopeite, Zn3(PO4)2.4H2O. Single-crystal X-ray data confirm that the Cu(II) occupies the Jahn-Teller distorted 6-coordinate cation site in the libethenite lattice, and the Zn(II) occupies the 5-coordinate site. The space group of zincolibethenite is Pnnm, the same as that of libethenite, with unit-cell parameters a = 8.326, b = 8.260, c = 5.877 Å , V = 404.5 Å 3, Z = 4, calculated density = 3.972 g/cm3 (libethenite has a = 8.076, b = 8.407, c = 5.898 Å , V = 400.44 Å 3, Z = 4, calculated density = 3.965 g/cm3). Zincolibethenite is biaxial negative, with 2Vα(calc.) of 49°, r<v, and α = 1.660, β = 1.705, and γ = 1.715 The mineral is named for its relationship to libethenite. |
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