Djati-Pengilon is an ordinary (H6) chondrite that fell the afternoon of March 19, 1884 in the Ngawi Regency of Indonesia.
A single stone weighing over 365 lb (166 kg) was recovered from the Aloesta river following a fireball and detonations.
According to the Meteoritical Society, the high-iron (H) chemical group of ordinary chondrites is distinguished by their high siderophile element content, relatively small chondrules (~0.3 mm), and oxygen isotope compositions that are closer to the terrestrial fractionation line than those of other ordinary chondrites. Petrologic type 6 chondrites have been metamorphosed under conditions sufficient to homogenize all mineral compositions, convert all low-Ca pyroxene to orthopyroxene, coarsen secondary phases such as feldspar to sizes ≥50 µm, and obliterate many chondrule outlines, though no melting has occurred.
To date, Djati-Pengilon is the largest ever H6 chondrite meteorite fall (vs find), and the 4th largest H6 classified worldwide.
Photo copyright ASU/BCMS.
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