| Comments: | Manganiandrosite-(La) occurs as small brown-red grains in Mn-rich concretions in a coarse grained sansdstone (arkose). The concretions vary from 3x5 to 10x30 cm across, and consist of mostly the same minerals as the sandstone, but are enriched in Mn-rich minerals, predominantly spessartine, piemontite and ardennite-(As), but also manganiandrosite-(La), zircon, monazite-(La), xenotime-(Y), chernovite-(Y), Nd-rich chernovite-(Y), gasparite-(Ce) and arsenoflorencite-(La). Most of these minerals were first identified in heavy mineral concentrates from the concretions.
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 | Mills, Stuart J., Kartashov, Pavel M., Kampf, Anthony R., Raudsepp, Mati (2010) Arsenoflorencite-(La), a new mineral from the Komi Republic, Russian Federation: description and crystal structure. European Journal of Mineralogy, 22 (4) 613-621 doi:10.1127/0935-1221/2010/0022-2043 | Journal (article/letter/editorial) | | online May 2010 Arsenoflorencite-(La), a new mineral from the Komi Republic, Russian Federation: description...Sciences, Staromonetnyi pereulok 35, 119017 Moscow, Russia 3 Mineral Sciences Department, Natural History...90007, USA Abstract: Arsenoflorencite-(La) [Aopelsjmoelphq-(La)], ideally LaAl3(AsO4)2(OH)6, is a new...from the Grubependity Lake cirque, Maldynyrd range, upper Kozhim River basin, Prepolar Ural, Komi Republic...Republic, Russia. It occurs in direct association with zircon, quartz, hematite, ardennite-(As), andalusite |  | | Journal (article/letter/editorial) | | (NH4)4NaAl2(SO4)4Cl(OH)2, a new ammonium sulfate chloride from La Fossa crater, Vulcano, Aeolian Islands, Italy. Can...fumarole (250 °C) in a pyroclastic breccia in the La Fossa crater, Vulcano. Aeolian Islands, Sicily, Italy...prisms. Crystals are vitreous and transparent and range in color from beige, beige-yellow, light lemon yellow...uniaxial negative, exhibits sharp extinction and a range of refractive indices [ω = 1.696–1.714(4), ε = 1...electron microprobe (WDS) and laser ablation-ICPMS. LA-ICPMS was used to verify the presence of B (8–11 |
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Grubependity Lake cirque, Grubependity Lake, Maldynyrd range, Kozhim River Basin, Komi Republic, Russia