NWA 8721 (CK5) SOLD OUT

A 152.08g mostly crusted stone was purchased out of Morocco in October of 2014. I prepared the slices and classification was done by Dr. Alan Rubin and John Breen (student) who determined the stone to be a CK5 Carbonaceous Chondrite with a shock stage of 2 and weathering grade of 4. Slices feature dark chondrules and CAI’s scattered within a grayish to brown matrix. Each will come in a quality labeled meteorite display box.

Petrography as follows:
Microprobe examination of a polished mount shows plagioclase grains average 20 µm in size. The groundmass grain size is 70 µm, consistent with CK5. There are readily discernible chondrules and small rounded magnetite grains. Olivine: Fa 32.5±0.3 (n=18); there is no low-Ca pyroxene; Ca-pyroxene: Fs10.2±2.3 Wo48.0±0.6 (n=5). Direct link to Meteoritical Bulletin here.

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