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| Reference Type | Journal (article/letter/editorial) | ||
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| Title | Guangyuanite, Pb3Cl3(Se4+O3)(OH), a new lead-chloride-selenite mineral from the El Dragón mine, Potosí, Bolivia | ||
| Journal | Mineralogical Magazine | ||
| Authors | Yang, Hexiong | Author | |
| Gu, Xiangping | Author | ||
| McGlasson, James A. | Author | ||
| Gibbs, Ronald B. | Author | ||
| Downs, Robert T. | Author | ||
| Year | 2024 | Volume | < 88 > |
| Page(s) | 97-104 | ||
| Publisher | Cambridge University Press | ||
| Download URL | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/B4440A968B66EBB4FDE89CF032ECBD39/S0026461X23000932a.pdf/guangyuanite-pb3cl3se4o3oh-a-new-lead-chloride-selenite-mineral-from-the-el-dragon-mine-potosi-bolivia.pdf+ | ||
| DOI | doi:10.1180/mgm.2023.93Search in ResearchGate | ||
| Generate Citation Formats | |||
| Classification | Not set | LoC | Not set |
| Mindat Ref. ID | 16991276 | Long-form Identifier | mindat:1:5:16991276:7 |
| GUID | 0 | ||
| Full Reference | Yang, Hexiong, Gu, Xiangping, McGlasson, James A., Gibbs, Ronald B., Downs, Robert T. (2024) Guangyuanite, Pb3Cl3(Se4+O3)(OH), a new lead-chloride-selenite mineral from the El Dragón mine, Potosí, Bolivia. Mineralogical Magazine, 88. 97-104 doi:10.1180/mgm.2023.93 | ||
| Plain Text | Yang, Hexiong, Gu, Xiangping, McGlasson, James A., Gibbs, Ronald B., Downs, Robert T. (2024) Guangyuanite, Pb3Cl3(Se4+O3)(OH), a new lead-chloride-selenite mineral from the El Dragón mine, Potosí, Bolivia. Mineralogical Magazine, 88. 97-104 doi:10.1180/mgm.2023.93 | ||
| In | Link this record to the correct parent record (if possible) | ||
| Abstract/Notes | A new mineral species, guangyuanite, ideally Pb3Cl3(Se4+O3)(OH), was discovered from the El Dragón mine, Antonio Quijarro Province, Potosí Department, Bolivia. It occurs as equant crystals. Associated minerals are Co-bearing krut’aite–penroseite, chalcomenite, schmiederite, olsacherite, phosgenite, anglesite, cerussite and franksousaite. Guangyuanite is pale yellow–brown in transmitted light, transparent with white streak and vitreous lustre. It is brittle and has a Mohs hardness of ∼3. No parting or cleavage was observed. The calculated density is 7.63 g/cm3 . An electron microprobe analysis yielded an empirical formula [based on 7 (O + Cl) atoms per formula unit] of Pb3.02Cl3.01(Se4+ 0.99O3)(OH), which can be simplified to Pb3Cl3(Se4+O3)(OH). Guangyuanite is isostructural with synthetic Pb3Br3(Se4+O3)(OH). It is orthorhombic, with space group Pnma and unit-cell parameters a = 11.0003(5), b = 10.6460(5), c = 7.7902 Å, V = 912.31(6) Å3 and Z = 4. The crystal structure of guangyuanite contains two symmetrically-distinct Pb (Pb1 and Pb2) cations, with Pb1 coordinated by eight anions (4O + 4Cl) and Pb2 only by six anions (3O + 3Cl), forming a marked lopsided coordination typical of Pb2+ with a stereochemically active 6s2 lone electron pair. The Se4+ cation forms a typical [Se4+O3] trigonal pyramid. The crystal structure of guangyuanite can be described as consisting of layers of edge-sharing [Pb1O4Cl4] polyhedra parallel to (100). These layers are linked together by sharing polyhedral corners (Cl atoms), as well as [Pb2O3Cl3] and [Se4+O3] groups. Chemically, guangyuanite is one of six lead chloride selenite minerals reported thus far and closely related to orlandiite Pb3Cl4(Se4+O3)⋅H2O. | ||
| Mineral | Citation Details |
|---|---|
| Guangyuanite |
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