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Lomonosov 15002
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:help 118 g
Classification
  history:
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 244 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 10 Apr 2021
Writeuphelp
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:
Date:2016 Jan 01
Latitude:71°33'0.6"S
Longitude:15°30'30.2"E
Mass (g):118
Pieces:1
Class:Eucrite-mmict
Weathering grade:B
Classifier:M. A. Ivanova, C. A. Lorenz (Vernad)
Type spec mass (g):118 g
Type spec location:UrFU
Main mass:110 g 1 samples- UrFU, and 8 g cut-off and 2 thin section Vernad
Finder:Pastukhovich A.Yu., member of UrFU meteorite search team of Russian Antarctic Expedition 61
Comments:Field name Past-1; analysts - M. A. Ivanova, C. A. Lorenz (Vernad); submitted by Pastukhovich A.Yu. (UrFU).; submitted by Kseniya Dugushkina (RAS-UB) dugushkina.kseniya@mail.ru
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography:

Antarctica
Coordinates:
     Recommended::   (71° 33' 1"S, 15° 30' 30"E)

Statistics:
     This is 1 of 40753 approved meteorites from Antarctica (plus 4494 unapproved names)
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