| Reference Type | Journal (article/letter/editorial) |
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| Title | The crystal structure of munakataite, Pb2Cu2(Se4+O3)(SO4)(OH)4, from Otto Mountain, San Bernardino County, California, USA |
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| Journal | Mineralogical Magazine |
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| Authors | Kampf, A. R. | Author |
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| Mills, S. J. | Author |
| Housley, R. M. | Author |
| Year | 2010 (December) | Volume | 74 |
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| Page(s) | 991-998 | Issue | 6 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/rruff_1.0/uploads/MM74_991.pdf+ |
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| DOI | doi:10.1180/minmag.2010.074.6.991Search in ResearchGate |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 244125 | Long-form Identifier | mindat:1:5:244125:6 |
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| GUID | 85305c45-facd-443d-af34-deaae90b71f5 |
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| Full Reference | Kampf, A. R., Mills, S. J., Housley, R. M. (2010) The crystal structure of munakataite, Pb2Cu2(Se4+O3)(SO4)(OH)4, from Otto Mountain, San Bernardino County, California, USA. Mineralogical Magazine, 74 (6) 991-998 doi:10.1180/minmag.2010.074.6.991 |
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| Plain Text | Kampf, A. R., Mills, S. J., Housley, R. M. (2010) The crystal structure of munakataite, Pb2Cu2(Se4+O3)(SO4)(OH)4, from Otto Mountain, San Bernardino County, California, USA. Mineralogical Magazine, 74 (6) 991-998 doi:10.1180/minmag.2010.074.6.991 |
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| In | (2010, December) Mineralogical Magazine Vol. 74 (6) Mineralogical Society |
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| Abstract/Notes | AbstractMunakataite, Pb2Cu2(Se4+O3)(SO4)(OH)4, has been found in association with a variety of rare secondary Te minerals at Otto Mountain, San Bernardino County, California, USA. It is very rare and occurs as subparallel bundles of blue needles up to 1 mm long. Electron microprobe analyses provided the empirical formula Pb1.96Cu1.60[(Se0.894+S0.11)∑1O3](SO4)[(OH)3.34(H2O)0.66]∑4- Munakataite is mono-clinic, space group P21/m, with cell parameters a = 9.8023(26), b = 5.6751(14), c = 9.2811(25) Å, β = 102.443(6), V = 504.2(2) Å3 and Z = 2. The crystal structure, solved by direct methods and refined to R1 = 0.0308 for 544 Fo > 4σF reflections, consists of Jahn-Teller-distorted Cu2+O6 square bipyramids. which form chains along b by sharing trans edges across their square planes. The chains are decorated by SO4 tetrahedra and Se4+O3 pyramids, which bond to apical corners of adjacent bipyramids. The chains are linked to one another via bonds to two different PbO9 polyhedra, only one of which exhibits one-sided coordination typical of Pb2+ with a stereochemically active 6s2 lone-electron-pair. Munakataite is isostructural with schmiederite and the structure is closely related to that of linarite. |
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