Meteorite NEW FALL Tamdakht H5, ex individual 1260 gram

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Tamdakht                     Location 31°09.8’ N, 7°00.9’ W

Morocco

Fall: 20 December 2008, 22:37 hrs (local time; UT+00)

Ordinary chondrite H5

History (H. Chennaoui-Aoudjehane): On December 20, 2008, witnesses from a number of locations in Morocco
(Agadir, Marrakesh, Ouarzazate)
 observed a meteor with a W to E trajectory. According to the local newspaper, Al Massae (of December 27th),
people from the high Atlas Mountains (between Marrakesh and Ouazazate) heard a sound and felt an aftershock.
Due to the high relief in this mountain region, covered with snow at this time of the year,
searching for the meteorite was a difficult task. The first reports on finding pieces of a meteorite
came a couple of weeks later. The largest impact pit is located near Oued Aachir (1.10 m diameter
and 70 cm depth, 31°09.8’N, 7°00.9’W), with a stone exceeding 30 kg and many small fragments.
A second one is smaller, (about 20 cm diameter and 10 cm depth; 31°09.9?N 07°02.3?W) located 2 km W from the first one;
the main mass from the second impact was probably about 500 g.
Nine new impacts coordinates have been reported by S. Buhl and M. Aid, and P. Thomas reported 3 other impacts.
A strewn field of at least 25 km long and 2 km wide has been outlined.

Physical characteristics: Total weight is presently estimated to be 100 kg. Pieces recovered as of February 15, 2009,
are 30 kg, 1.5 kg, 3.8 kg, 3.69 kg, 2.4 kg, 1.5 kg, 1 kg, 800 g, and 399 g. One major fragment of 1.7 kg
and many small pieces from the same stone (ranging 500 to below 1 g) were also recovered.
The largest fragment shows a nearly complete dull gray fusion crust, other pieces are 90% crusted to free of crust,
often broken along preexisting fractures. Thick fusion crust, locally more than 1 mm.

Petrography (Albert Jambon, Omar Boudouma, D. Badia UPVI and M. Denise, MNHNP):
Abundant chondrules with visible but not well-delimited outlines.
Chondrule size is 0.1 to 1.5 mm. Dominant olivine and orthopyroxene. Abundant chromite, rare clinopyroxene and ilmenite.
Numerous pockets with chromite, plagioclase and phosphate (merrilite and Cl-apatite). Kamacite, with deformed Neumann bands,
and taenite, twinned troilite. Copper. Mode: metal+troilite 10%.

Mineral compositions and geochemistry: log ? = 5.3. Olivine Fa18 ± 0.5 Opx = En83 Fs16 Wo2 Minor calcic pyroxene.
Plagioclase is Ab83–86 An5–15 Or7–2. Ca-phosphate (merrillite and Cl-apatite). Chromite: Cr# (100? molar Cr/[Cr + Al]) = 82.
Metal: kamacite with 5% Ni and taenite with 36–47% Ni. Oxygen isotopes (C. Suavet, J. Gattacecca CEREGE): ?17O = 3.26‰,
?18O = 5.01‰, and ?17O = 0.65‰. Magnetic susceptibility is log ? = 5.3 ? 10–9 m3/kg.

Classification: Ordinary chondrite (H5), S3, W0.

SHIPPING:

1. inside USA will be $18 and $1.8 for insurance.

2. outside USA will be $40.

GOOD LUCK.

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