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(LL6, S3, W0) Meteoritical Bulletin #89
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We arrived in Benguerir on November 30 at 9.00 am. It's raining!
We took the direction of a little village distant of 20 km, Douar Tnaja. There, two witnesses of the fall show us the place where a stone weighing around 10 kg felt. The coordinates of this place are N 32° 15', W 8° 07'.
A 10 x 10 m area has been plowed and the crater is no more visible. It's very probable that a meteorite of this weight dig a deep "hole" in this kind of ground, the soil there is light and dry.
The first rain after the fall was on November 29.
The two witnesses have seen a fireball coming from the North-North East and have heard a big explosion that has terrified them.
After feeling reassured, the two shepherds went back to the impact area. One hour later, the responsible of the village came and call the royal police force. As soon as they arrived, they have requisitioned the piece. |
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The royal police force has visited each house of the fall area, asking people to give them the meteorites. Some people have complied with this order but a few of them have hidden the meteorites.
An inhabitant has showed me a meteorite weighing around 1 kg. The only problem is that he hides it in his well to be sure that the police won't find it. Dived in the water since a week, this meteorite presents already some weathering signs.
The fall happens in a densely populated area. It seems that the witnesses have quickly collected the stones after the fall and that the police have recovered the majority of them. Few people have faced the fear of the police and have kept the meteorites.
On December 1st, we go back to the fall place to collect some other evidences, take more photos and GPS coordinates. Early in the morning, we were noticed by the National Security, which have interrogated us on the reasons of our presence in Morocco. This scene has scared all the moroccan people who were there to look for meteorites. They have leaved the place immediately. As it was impossible for us to continue the hunting, we went back to Marrakech and then, to France. |
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Few kilometers of tracks to arrive at Douar Tnaja © P. Thomas |
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Prickly Pear, hunting is dangerous! © P. Thomas |
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Douar Tnaja is a very small village, just few houses © P. Thomas |
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N 32° 15', W 8° 07' © P. Thomas |
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With the red djellaba, the first witness of the large individual fell at Douar Tnaja. He was standing exactly at the same place during the fall, There is approximately 150 m between him and the impact point! © P. Thomas |
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Another witness of the fall but not gabby! © P. Thomas |
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Go back to Marrakesh, at the bottom of the snow-covered Atlas © P. Thomas
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A large individual weighing 1037 g © P. Thomas |
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Press cutting from Libération (Morocco) on november 29 © P. Thomas |
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Barred olivine chondrule in polarized light. Benguerir thin section (x100) © Hasnaa Chennaoui Aoudjehane |
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Press cutting, December 16, 2004:
(Benguerir meteorite)
First declaration of a celestial body by a Moroccan university
The fall of meteorite observed in Morocco Monday November 22, 2004 at 11h45 in the area of Benguerir, in Sebt de Brikiine, was declared at the committee of nomenclature of Meteoritical Society, international scientific organization enabled to receive and publish the declarations of meteorites in the world. This fall was observed by several people who provided precise testimonies in particular a deaf noise of thunder followed by noises of bursting. These noises were heard at least at twenty kilometers around. In the town of Benguerir, it was even noted a vibration of the windows when the noise was heard.
The three recorded impacts could be written on the topographic map of the area. Two of them were on plowed ground and measured respectively 15 centimeters and 40 centimeters. The third impact was on a granite, prevalent rock of the area, which has been broken.
The geochemical analyses and the preliminary petrographic observations revealed that it is an ordinary chondrite of type LL6, with degree of shock average and heterogeneous (S3) and without any weathering (W0) since it is a very recent fall. The fusion crust is perfectly preserved. It presents by places important concentrations of automorphic sulfide which form small "geodes". The metal is disseminated in a heterogeneous way with rich zones and zones deprived of metal concentrations.
The statement was made by Dr. Hasnaa Chennaoui Aoudjehane of the Faculty of Science of the University Hassan II Aïn Chock in Casablanca. It could be carried out in record time of three weeks after the fall. This performance was possible thanks to the coordination and with the efforts made by the local authorities in the person of the Governor of Kalaa Sraghna, by the Service of the co-operation and the cultural action (SCAC) of the Embassy of France in Morocco, by the laboratory of Magmatologie and Inorganic and Experimental Geochemistry (MAGIC) of the University Pierre and Marie Curie Paris VI, the Laboratory of Study of the Extraterrestrial Matter of the National Natural history museum of Natural History of Paris and by the Faculty of Science and the University Hassan II Aïn Chock.
For the first time in this type of research, the scientific and cultural Moroccan inheritance concerning this meteorite was preserved. She enters by the large door in the sphere of scientific research. S.E.A. |
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