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Met Type

Thin Sections

14 gram etched full slice.   Iron, ungrouped

TKW 358 grams. Fall not observed. Purchased October, 2008, Morocco.

Gregor writes:

Specimen has a heat-affected rim.

From the MetBul:

Petrography: (M. D’Orazio, DST-PI) Etched sections show a well-preserved heat-affected rim and a peculiar internal structure of sub-equant, 5 to 10 mm kamacite grains with prominent Neumann bands between which are comb-net plessite bodies. Troilite occurs within kamacite as 1 to 6 mm rounded inclusions showing lamellar twinning, whereas schreibersite forms 100 to 500 µm subhedral, elongated crystals often grown at the troilite-kamacite interface. Several inclusions of troilite show, towards their contact with the host kamacite, replacements by chalcopyrite. Many small hollow spaces (from 0.5 to 10 mm in length), sometimes lined with black iron hydroxides, characterize the internal structure of this meteorite. Close to the external surface these cavities are filled with rounded, sand-sized, grains of quartz from the desert soil.

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