Andila        12.79°N, 21.20° E

Ouaddai, Chad

Confirmed fall: 2014 Aug 21

Classification: Ordinary chondrite (L6)

History: According to written report from the prefect of Abdi (Mr. Levy Dappina), on August 21, 2014, around 10 am, a series of strong detonations were heard over a distance of 70 km. Later the prefect got a phone call from the village of Andila (12 km W of Abdi) signaling that rocks fell from the sky. A police patrol went to the place and collected, the same day, a series of stones, said to have made a 10 cm hole in the soil and which produced smoke on impact. It is not clear if several individuals were collected or if the stones mentioned were fragments from a single individual. Based on the 171 g piece received by J.C. Doumnang from N’Djamena University, and a discussion with Mr. Dappina, the whole individual mass is estimated to about half a kg. The prefect later handed the stones (except the one that was brought to J.C. Doumnang for identification in 2018) to the governor of Ouaddaï, together with a report. J.C. Doumnang later brought the stone to CEREGE where it was classified.

Physical characteristics: The 171 g fragment is one-third covered with black fusion crust. Fractures reveal a homogeneous, light gray, chondrule-bearing stone with a few faint rust stains. Some troilite aggregates. The material is quite fragile due to intense fracturing.

Petrography: Recrystallized chondritic texture with average plagioclase size >50 μm, but relatively well-preserved chondrules. Main minerals are olivine, pyroxene, plagioclase, kamacite, troilite. Olivine shows sharp optical extinction. No oxidation products visible in section.

Geochemistry: Olivine Fa_25.5±0.2 (N=3), orthopyroxene Fs_21.8±0.1Wo_1.8±0.3 (N=3).

Classification: Ordinary chondrite, L6

Specimens: 124 g fragment in N’Djamena University, type specimen (42 g) a polished section and a thin section at CEREGE.