The Meteoritical Bulletin, No. 110

– Meteoritical Bulletin 110 contains the 2802 meteorites approved by the Nomenclature Committee of the Meteoritical Society in 2021. It includes 10 falls (Arpu Kuilpu, Djadjarm, Glendale, Kindberg, Madura Cave, Motopi Pan, Orconuma, Punggur


TRENDS AND SPECIFICITIES
Meteoritical Bulletin 110 (MB110) contains the 2802 meteorites submitted to and accepted by the Nomenclature Committee of the Meteoritical Society in 2021.This is the highest number of new meteorites since the Meteoritical Bulletin has been phased with calendar years starting with Bulletin 105 in 2016.This high number is driven by the large numbers of Antarctic meteorites, and a record high number of meteorites classified as Northwest Africa (NWA) meteorites (930 meteorites).The 28 meteorites in MB110 total 18.9 tons of material, most of which is from the El Ali iron meteorite (15.2 t).Five other meteorites are over 100 kg (including NWA 13758 R3 chondrite), and 10 meteorites are between 50 and 100 kg (including Dhofar 2115 ureilite and NWA 13670 EL6).
In detail, 1270 meteorites are from Antarctica, 1049 from Africa (930 with an NWA name), 329 from South America (326 from Chile), 123 from Asia, 20 from North America (19 from the USA), 6 from Europe, 3 from Oceania, and 2 from unknown locations (Fig. 1).As for the last few years, Chile, with 326 meteorites (12% of the total), is now the main source of meteorites outside of North Africa and Antarctica.
The meteorites classified in MB110 include 10 falls that occurred between 2018 and 2021 with the addition of Orconuma that is from 2011.It is noteworthy that 5 of these 10 falls' meteorites were recovered with the assistance of camera networks such as the Desert Fireball Network in Australia (Bland et al., 2012), or international networks such as FRIPON (Colas et al., 2020).
Compared to previous years, the number of ungrouped chondrites (12) and ungrouped achondrites (11) has increased significantly.The ungrouped chondrites include mostly chondrites that are on the border between type 2 and type 3, and that have oxygen isotopic composition distinct from CM2 (for instance Telakoast 001; see Irving et al., 2022).

NOTABLE METEORITES
Winchcombe (CM2) is the latest of a series of five CM falls since 2017.Another notable fall is the Motopi Pan howardite.Meteorite finds that are notable for their mass, rarity, and/or scientific interest include El Ali (15.2 t iron belonging to the IAB complex), Erg Atouila 001 (a 793 g ungrouped achondrite with a modal abundance of ~95% albitic alkali feldspar, making it the first meteoritic albitite), Chug Chug 086 (only the 11 th ungrouped ordinary chondrite), NWA 13758 (100 kg R3), NWA 14505 (24 kg CV3).Five new nakhlites have been registered in MB110, a very significant addition in view of the total numbers of known nakhlites (28 without considering pairing).The Nomenclature Committee now recognizes the CL carbonaceous chondrite group following the publication of Metzler et al. (2021).Five meteorites have been reclassified as CL in MB110: Coolidge, Loongana 001, Los Vientos 051, NWA 033, and NWA 13400.The large number of type 2/3 ungrouped carbonaceous in MB110 call for more work that may eventually lead to the definition of additional carbonaceous chondrite groups in peer-reviewed literature.

ALPHABETICAL TEXT ENTRIES FOR NON-ANTARCTIC METEORITES
See online version of this article.

NEW DENSE COLLECTION AREAS
In 2020, 38 new dense collection areas (DCA) were created, including 26 in the northwest Africa area: 11 in Algeria, 11 in Morocco and Western Sahara, 3 in Mali, 1 in Mauritania, 4 in China, 4 in Iran, 2 in the United Arab Emirates, 1 in Turkey, and 1 in Libya.A full list of all approved DCAs, with maps, can be found at https://www.lpi.usra.edu/meteor/DenseAreas.php.

LISTING OF INSTITUTES AND COLLECTIONS
An up-to-date index of collections and approved repositories (next to a green check mark) cited in the Meteorite Bulletin can be found here: https://www.lpi.usra.edu/meteor/MetBullAddresses.php?grp=country Data Availability Statement-The data that support the findings of this study are available in the supplementary material of this article.

Fig. 1 .
Fig. 1.Number of meteorites from Antarctica, northwest Africa (NWA), South America, and Asia reported in the last 10 Meteoritical Bulletins.(Color figure can be viewed at wileyonlinelibrary.com.)