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| Lomonosov 15002 | |||||||||||||||||||||||||||
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| Basic information | Name: Lomonosov 15002 This is an OFFICIAL meteorite name. Abbreviation: LOM 15002 Observed fall: No Year found: 2016 Country: Antarctica [Collected by the Russian Antarctic Expedition] Mass:  118 g | ||||||||||||||||||||||||||
| Classification history: |
This is 1 of 272 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||
| Comments: | Approved 10 Apr 2021 | ||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Lomonosov 15002 71°33’0.6"S, 15°30’30.2"E Antarctica Find: 2016 Jan 01 Classification: HED achondrite (Eucrite, monomict) History: One fragment of meteorite (118 g) was found by Mr. Pastukhovich A.Yu. 01 Junary 2016, member of the UrFU meteorite search team of Russian Antarctic Expedition 61 (Kolunin R.N., Korolev A.Yu., Larionov M.Yu., Lazo V.I., Malagamba S.V., Pastukhovich A.Yu. ) near Mnt. Osechka (Lomonosov mountains, Queen Maud Land, Antarctic). Physical characteristics: Almost entirely fusion-crusted. Petrography: M. A. Ivanova, C. A. Lorenz (Vernad). The fusion crust consists of transparent brown glass with gas vesicles up to 100 ?m in diameter. The fusion crust is decorated by a network of tiny sulfide veinlets entering through fractures into the silicate grains and along the grain boundaries up to 50 ?m from the fusion crust. The meteorite is very fragile due to numerous fractures. It consists of rock fragments up to 1 mm in size embedded into the fine-grained recrystallized clastic main mass. The content of the rock fragments (0.2-1 mm in size) is ~50%. The main mass is comprised of grains less than 100 ?m in size. The rock fragments have poikilophitic texture; feldspar forms anhedral and subhedral grains growing in and between the subhedral pyroxene crystals. The more coarse-grained rock fragments has granular texture. The grain size of pyroxene and feldspar is 100-200 ?m. The pyroxene and feldspar in the rock fragments have undulatory extinction. The pyroxene contains fine lamellae (0.1-10 ?m) of solid solution breakdown. Accessory phases are silica polymorph, probably tridymite, iron sulfide (troilite), ilmenite, chromite, phosphate, zircon, metallic iron, iron hydroxides. The meteorite is moderately weathered, weathering index is B. Geochemistry: M. A. Ivanova, C. A. Lorenz (Vernad). Pyroxene is pigeonite En36.3±1.12Wo5.69±1.81 (N=10), Fe/Mn=31.3 at.; augite lamellae are En30.1±0.28Wo40.8±0.17 (N=10). Feldspar is An90.5±1.68Ab9.04±1.67 (N=5). Classification: Achondrite (eucrite, monomict genomict breccia) Specimens: 110 g at UrFU, 8 g and 2 thin sections at Vernad | ||||||||||||||||||||||||||
| Data from: MB110 Table 0 Line 0: |
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| Institutions and collections |
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016) UrFU: Ural Federal University, 620002, 19 Mira street, Ekaterinburg, Russia (institutional address; updated 14 Jan 2015) RAS-UB: Zavaritsky Institute of Geology and Geochemistry Russian Academy of Sciences, Ural Branch 15 Akademika Vonsovskogo str., Ekaterinburg, 620016, Russia (institutional address; updated 19 Apr 2018) |
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| References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography:
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Statistics: This is 1 of 43840 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||||
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