NWA 6287 LL5 Chondrite Meteorite Sliced
NWA869 L5 Chondrite Meteorite Slice
Location: Northwest Africa
Found: 2010
Classification: Ordinary LL% chondrite
Size: 58 x 29 x 7mm
Weight: 23.1gram
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Description
Very interesting sliced up piece of meteorite showing the composition of the meteorite. The iron flakes are clearly visible as can be seem in the enlarged images. The piece is magnetic.
What does LL5 mean?
LL5 means "An ordinary chondrite from the LL group that is petrologic type 5."
Ordinary chondrite: A major class of chondrites, distinguished by sub-solar Mg/Si and refractory/Si ratios, oxygen isotope compositions that plot above the terrestrial fractionation line, and a large volume percentage of chondrules, with only 10-15 vol% fine-grained matrix.
LL group: The low-iron, low metal (LL) chemical group of ordinary chondrites, distinguished by their low siderophile element content, fairly large chondrules (~0.9 mm), and oxygen isotope compositions that are further above the terrestrial fractionation line than those of other ordinary chondrites. .
Type 5: Designates chondrites that have been metamorphosed under conditions sufficient to homogenize olivine and pyroxene, convert all low-Ca pyroxene to orthopyroxene, cause the growth of various secondary minerals, and blur chondrule outlines.
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The piece in the images is of the piece you will receive.