DINGDAOHENGITE-(Ce) FROM VISHNEVYE MOUNTAINS (SOUTHERN URALS, RUSSIA)
Dingdaohengite-(Ce) was found in assemblage with albite, aegirine, ferroferriwinchite, calcite, pyrite and molybdenite in the central part of the syenite pegmatite of the vein № 125 in Vishnevye mountains in the Southern Urals (the second finding in Russia). The crystals are subisometric, with sides...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2017-09-01
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| Series: | Минералогия |
| Subjects: | |
| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2019/09/2017-3-1.pdf |
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| Summary: | Dingdaohengite-(Ce) was found in assemblage with albite, aegirine, ferroferriwinchite, calcite, pyrite and molybdenite in the central part of the syenite pegmatite of the vein № 125 in Vishnevye mountains in the Southern Urals (the second finding in Russia). The crystals are subisometric, with sides of pinacoidal {100}, {001}, {201}, {20 1}, {301}, {203} and rhombic prisms {110}, {111}. Parameters of the monoclinic unit cell: a = 13.59(3) Å, b = 5.779(6) Å, c = 11.113(18) Å, β = 100.42(19)°, V = 858(3)Å3 ; empirical formula is (Ce1.77La1.34Nd0.26Pr0.06Ca0.48Mn0.05Th0.04) Σ4.00(Fe2+ 0.61Mn0.39)Σ1.00 (Ti 0.85Fe3+ 0.71Fe2+ 0.24Mg0.16)Σ1.96 (Ti1.86Nb0.14)Σ2.00 (Si4O21.99). |
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| ISSN: | 2313-545X 2782-2044 |