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| Ain Ben Tili 002 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Ain Ben Tili 002 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2023 Country: Mauritania Mass:  1000 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 130 approved meteorites classified as CK4. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 21 Oct 2023 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 112:
Ain Ben Tili 002 25.89954°N, 9.85673°W Tiris Zemmour, Mauritania Purchased: 2023 Classification: Carbonaceous chondrite (CK4) Petrography: (K. Metzler, IfP) Chondrules, chondrule fragments, and CAIs are embedded in a recrystallized black matrix, which is interspersed with magnetite grains and nodules. The range of apparent sizes of most chondrules is 0.5-1.0 mm (up to 1.8 mm). Chondrules with igneous rims are frequently observed. Small amounts of pentlandite are present. Geochemistry: Mineral compositions and geochemistry: Mean olivine composition: Fa32.2±0.4 (Fa31.6-32.9); mean NiO concentration: 0.71 wt%; n=12. Mean composition of low- Ca pyroxene: Fs26.0±1.1 Wo2.1±1.8 (Fs24.4-28.3 Wo0.7-4.9); n=13. Mean composition of Ca-rich pyroxene: Fs12.5±3.6 Wo47.3±1.6 (Fs7.5-19.1 Wo43.8-48.9); n=11. Magnetite shows significant concentrations of elements other than Fe (wt%; mean values): MgO=0.24; Al2O3=1.85; Cr2O3=5.36; NiO=0.37 (n=6). Classification: CK chondrite based on texture and mineral chemistry. Petrologic type 4 based on the equilibrated state of olivine and the chemical variation of pyroxene. | ||||||||||||||||||||||||||||||||||||
| Data from: MB112 Table 0 Line 0: |
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| Institutions and collections |
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
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| References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Geography:
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Statistics: This is 1 of 33 approved meteorites from Tiris Zemmour, Mauritania (plus 1 impact crater) This is 1 of 232 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||||||||||
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