Description
2.83g slice of the monomict eucrite NWA 13343. Sold in box with label/certificate.
Northwest Africa 13343 (NWA 13343)
(Northwest Africa)
Purchased: 2019
Classification: HED achondrite (Eucrite, monomict)
History: The meteorite was purchased from a meteorite dealer in Morocco.
Physical characteristics: Many greyish fragments some of which partly covered with fusion crust.
Petrography: The meteorite is a coarse-grained basaltic breccia predominantly composed of exsolved pyroxene and often lath-shaped calcic plagioclase up to 1.5 mm in size. Minor phases include silica, chromite, FeS, and ilmenite. No metallic iron has been detected. The meteorite is heavily fractured.
Geochemistry: low-Ca pyroxene: Fs63.2±0.4Wo2.3±0.4 (Fs62.5-63.8Wo1.8-3.2, n=13, FeO/MnO=27-30); Ca-pyroxene: Fs27.6±0.7Wo44.1±0.5 (Fs25.3-28.3Wo43.6-45.8, n=16, FeO/MnO=25-31); calcic plagioclase: An89.2±0.9 (An87.6-90.3, n=14)
