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Tarkint 001

Status: Official

Basic information	Name: Tarkint 001 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2025 Country: Mali Mass: 2 kg
Classification history:	Meteoritical Bulletin, MB 114 (2026): Martian (shergottite) Recommended: Martian (shergottite) This is 1 of 364 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Comments:	Approved 21 Dec 2025
Writeup	Writeup from MB 114: Tarkint 001 17.4959263, 0.6428554 Gao, Mali Find: 2025 Classification: Martian meteorite (Shergottite) History: In 2025, fragments of a meteorite were discovered in a desert area 60 km east of the village of Tarkint and approximately 150 km northeast of the city of Gao, Mali. The discovery occurred by chance during a local field survey, where the distinctive surface features of the stones drew the attention of the field researchers. Purchased by Ali Muftah in 2025. Physical characteristics: The total collected mass was approximately 2 kg. The deposit samples display an exterior partially covered with dark, slightly abraded fusion crust. Sawcut surface reveals many distinctive mm-sized brown-green olivine phenocrysts set in light tan-colored, fine-grained groundmass. Petrography: (C. Agee, UNM) Electron microprobe analysis of a polished mount shows this meteorite to be an olivine-phyric shergottite. Olivine phenocrysts display core-rim igneous zoning. Plagioclase has been converted to maskelynite. Fine-grained pigeonite and maskelynite make up the groundmass. Minor amounts of chromite, Ti-magnetite, and troilite are ubiquitous. Geochemistry: (T. Shisseh, UNM) Olivine Fa32.6±12.1, Fe/Mn=53±4, n=13; pigeonite Fs23.3±3.2Wo4.9±2.2, Fe/Mn=30±1, n=17; maskelynite An54.9±3.5Ab44.7±3.5, n=4. Classification: Martian, olivine-phyric shergottite. Visually, the macroscopic texture of this meteorite is reminiscent of NWA 10416, however they are not paired. This meteorite lacks augite and altered olivine, it also has maskelynite-only, with no remnant plagioclase present. This meteorite has olivine that is significantly more forsteritic than NWA 10416. Specimens: 48 g on deposit at UNM, Ali Muftah holds the main mass, Eric Twelker holds a 410.7 g piece.
Data from: MB 114 Table 0 Line 0:	State/Prov/County: Gao Date: 2025 Latitude: 17.4959263 Longitude: 0.6428554 Mass (g): 2000 Pieces: Several Class: Martian (shergottite) Shock stage: high Weathering grade: low Fayalite (mol%): 32.6±12.1 Ferrosilite (mol%): 23.3±3.2 Wollastonite (mol%): 4.9±2.2 Classifier: C. Agee Type spec mass (g): 48 Type spec location: UNM Main mass: Ali Muftah Comments: Fieldname AWM-200; submitted by C. Agee

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