Roll Overs:
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4
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Copyright (c) Steve Brittenham.
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1.2 grams. Lunar (feldsp. breccia)
TKW 74.3 grams. Fall not observed. Purchased May 2015, Agadir, Morocco.
Steve writes:
When my wife and I visit schools to give presentations on meteorites, our
display and pass-around examples always includes Photo 1's 12" x 8" Riker
mount. The kids get a real kick out of being able to see actual pieces of
the moon and Mars, and they're usually most impressed by the 221 gram NWA
10203 half-stone in the middle. But for reasons I'll describe shortly, my
personal favorite is the NWA 10272 slice seen in the upper right corner of
Photo 1 and blown up in Photos 2 and 3.
NWA 10272 is a feldspathic lunar breccia that was originally purchased by
Pierre-Marie Pelé and Fabien Kuntz from an Agadir, Morocco dealer in May
2015 (the dealer had previously acquired it from nomads, so the actual
location of the find is not known). It originally weighed a bit over 91
grams (despite the MetBul listing of 74.3), but with 15 grams used for
classification and more lost to cutting and polishing, only about 38 grams
remained for sale. At 1.2 grams, the slice here is just slightly more than
half the size of the largest from the original stone, but in my opinion it's
one of the more aesthetic because of how the eucrite-like light gray
lithology displays against the other darker one (not all slices had both).
The reason it's my favorite planetary in our collection is that the curve
formed at the boundary between the two lithologies, their stark contrast,
and the various sized and colored clasts in the darker half all combine to
remind me a little of a view of the moon in space (I know, it's my
pareidolia!).
While NWA 10272 is considered to be paired with Galb Inal and NWAs 10149,
10172, 10203, and 10291, among them it's unique in its aforementioned highly
contrasting lithologies (as an example, while NWA 10272's different
lithologies are obvious from any angle, NWA 10203 requires just the right
light to show its different ones, as demonstrated by Photo 4's comparison of
two pictures taken with light reflecting from opposite angles).
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