Gebel Kamil  (IRUNG)
[Gilf al Kabir]
(جلف كبير)

[MBD][EoM]

Relacja z egipsko-włoskiej ekspedycji na południe Egiptu z 2009 roku (Egyptian-Italian expedition to southern Egypt).


Odkrycie krateru Kamil, badania geologiczne, znaleziska i masa główna(?) Gebel Kamil: http://www.mna.it/hosts/Kamil/index.htm
Main mass?

 

Okiem geologa (Norbert Brügge, Germany): http://www.b14643.de/Sahara/Kamil_Meteor_Crater/index.htm
photos+: main mass  |  main mass?  |  article  |

[MDB]
Gebel Kamil,
East Uweinat Desert, Egypt;
Found:
19 Feb 2009 Classification: Iron meteorite (ungrouped)
History
: A total of about 1600 kg of iron meteorite shrapnel (thousands of pieces), ranging in mass from < 1 to 35,000 g, plus a single 83 kg individual completely covered with well developed regmaglypts, was found in and around the 45 m diameter Kamil impact crater by an Italian-Egyptian geophysical team in February 2009 and February 2010. Ca. 800 kg of the total mass observed in the field (the regmaglypted individual inclusive) was recovered. The Kamil crater was identified by V. De Michele, former curator of the Natural History Museum in Milan, Italy. The geophysical survey was carried out within the framework of the "2009 Italian-Egyptian Year of Science and Technology".
Physical characteristics
: A 634 g type specimen, measuring 88 x 70 x 55 mm, is flattened and jagged shrapnel with a rough, dark-brown external surface. The surface originally sitting in the desert soil shows some oxy-hydroxides due to terrestrial weathering.
Petrography
: (M. D’Orazio, DST-PI; Luigi Folco, MNA-SI) Etched sections show an ataxitic structure interrupted on a centimetric scale by crystals of schreibersite, troilite and daubreelite enveloped in swathing kamacite. Kamacite spindles (20 ± 5 μm wide) nucleated on tiny schreibersite crystals. The spindles form small aligned clusters and are rimmed by taenite. The matrix is a duplex plessite made of approximately the same proportion of kamacite and taenite lamellae (1-5 μm in thickness) arranged in a micro-Widmanstätten pattern. Many sections show, particularly close to the external surface, shear dislocations offsetting the plessitic matrix and the crystals of the accessory phases by several millimeters.
Geochemistry
: (M. D’Orazio, DST-PI) Composition of the metal (ICP-MS; D’Orazio and Folco 2003) is Co=0.75, Ni=19.8 (both in wt%), Cu=464, Ga=49, Ge=121, As=15.6, Mo=9.1, Ru=2.11, Rh=0.75, Pd=4.8, Sn=2.49, Sb=0.26, W=0.66, Re=0.04, Ir=0.39, Pt=3.5, Au=1.57 (all in ppm).
Reference:
D’Orazio M. and Folco L. (2003) Chemical analysis of iron meteorites by inductively coupled plasma - mass spectrometry. Geostandards Newsletter: The Journal of Geostandards and Geoanalysis 27, 215-225.
Classification
: (M. D’Orazio, DST-PI; Luigi Folco, MNA-SI) Iron meteorite (ungrouped), Ni-rich ataxite, extensive shear deformation and low weathering.
Specimens
: Type specimens: ca. 15 kg and one section at MNA-SI; ca. 5 kg at DST-PI. Main mass of the recovered specimens at Egyptian Geological Museum (Mineral Resources Authority), Cairo, Egypt.

 
Informacje o znalezisku:
RSPD: http://www.rocksfromspace.org/June_20_2010.html
National Geographic: http://news.nationalgeographic.com/...science-space-egypt-kamil-crater-meteor-meteorite-impact-hazard/
NewScientist, issue 2772: http://www.newscientist.com/article/...deep-impact-market-the-race-to-acquire-meteorites.html
Meteoryty te mają bardzo ciekawą strukturę powierzchni. Ładne fotki tego znaleziska u Marcina Cimały na stronie relacji z Ensisheim:
http://www.polandmet.com/+ensisheim2010.htm
Już są w sprzedaży u Mirko Graula pierwsze płytki: http://www.meteorite-mirko.de/0334af9d8f00fba02/0334af9d9f1435202/index.php
Info na metmanii: http://jand.webd.pl/met/viewtopic.php?t=1409
 
link: Egipska-Sahara.pl – pustynia Gilf Kebir;
Rejon krateru został w 2012 roku ustanowiony rezerwatem - już nie można na tym terenie szukać ;-(
Egypt Independent - Meteorite crater site becomes latest protected area

fs 6.23 g

 

cs 247.3 g

Gebel Kamil  (IRUNG) Gebel Kamil  (IRUNG) [Gilf al Kabir]

 

cs 523.3 g

Gebel Kamil  (IRUNG) Gebel Kamil  (IRUNG) [Gilf al Kabir]

 

Informacje sprzed oficjalnej rejestracji tego meteorytu
Tymczasowa nazwa [Gilf Kebir] i wstępna klasyfikacja – ataksyt

 
Profesjonalne rosyjskie ekipy poszukiwaczy nie próżnują. W 2010 roku na targi w Ensisheim przywieźli oni kilkadziesiąt kilogramów bardzo intrygujących szrapneli meteorytu żelaznego, prawdopodobnie ataksytu, znalezionego w Egipcie przy świeżym kraterze (Gilf Kebir).
Krater ów 'leży na końcu świata' 22°01'06"N, 26°05'16"E
 
Informacja ze stron cometshopnew: Gilf Kabir region, Egypt
Find: 2009 Iron, ataxite (ungrouped); History: Numerous pieces of iron meteorite were purchased by anonymous dealer from local people. Finders said that the iron pieces were collected in the small impact crater (~40 m in diameter) on the territory of Gilf Kabir region, near a border with Sudan. Physical characteristics: The total mass of purchased iron is 70 kg. The metal pieces have splinter-like shapes and dark-brown weathered surface. Petrography: (C.A. Lorenz; S.N. Teplyakova; Vernad.) The meteorite has ataxitic texture. Widmannshtätten pattern is absent. The meteorite contains mainly taenite with tiny lenses and plates of kamacite and accessory shreibersite and troilite grains. Mineral compositions and geochemistry: Bulk metal composition (M. Humayun; Florida State University; LA-ISP-MS): Ni=213507; Ga=65; Ge=162; Ir=0.474 (all in ppm) Classification: Iron, ataxite (ungrouped) Type specimens: A total sample mass of 146.63 g and one polished section are on deposit at Vernad. Anonymous collector holds the main mass.

 

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