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History and physical characteristics: Hundreds of fragments that weigh >100 kg were collected
in the Algerian desert in 2004. Small fragments (~100 g) are commonly weathered to a dark
brown with very dark weathering veins. Large pieces may retain portions of weathered fusion
crust with only moderate to lightly weathered interiors.
Petrography: (T. Bunch and J. Wittke, NAU) A completely recrystallized enstatite chondrite with
polygonal to irregular grain outlines. The grain size varies from 0.02 to 0.7 mm. Round, curved,
blocky objects contain coarser-grained orthopyroxene than in the matrix. No relict chondrules
were observed in ~32 cm2 that were analyzed. Metal, daubreelite, and tiny, vermicular grains
of graphite are also present and constitute <3 vol%.
Mineral compositions: Orthopyroxene (Fs98.4±0.02), plagioclase (An17.8Or4.4), troilite with Ti
= 0.91, Cr = 1.10, Zn = 0.6 (all wt%).
Classification: Enstatite chondrite (EL6/7); minimal shock, variable weathering (W2–W5). It
has absolutely no evidence of chondrules.
Type specimen: A 24 g sample is on deposit at NAU. Turecki and Reed hold the main mass.
||EL6/7 Enstatite chondrite
||Found 2005, North West Africa
||100+KG, also other known pairings
||3 covered thin sections
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