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Location: Park Forest, Cook
County, Illinois, USA 41°29'05" N, 87°40'45" W
Fell: 2003 March 26, approx. 23:50 hrs local time
Type: Ordinary chondrite (L5)
Description: A bright fireball
was seen by numerous observers in parts of Illinois, Indiana,
Wisconsin and Ohio around midnight of March 26, 2003. Numerous
stones fell, mostly concentrated in the area of the village of
Park Forest. At least two houses in Park Forest were struck, as
was the Fire Station. Dozens of other stones or fragments of
stones were recovered in the area in the hours and days following
the fall. Total mass recovered is more than 18 kg, largest stone
~3 kg in possession of finder.
Description and classification (S. Simon, UChi; M. Wadhwa, FMNH;
P. Sipiera, PSF): Most stones are partly to fully fusion-crusted.
Some broken faces show brecciated texture, angular clasts.
Cross-cutting dark veins and dark pockets may be of impact melt
origin. No visible chondrules in hand sample. Abundant troilite
and metal visible in some broken faces. Chondrules and
maskelynite are visible in thin section. Mean olivine composition
Fa24.7, mean low-Ca pyroxene Fs20.7Wo1.6. Shock stage S5.
Meteoritical Bulletin 87.
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