NWA 8336, Vestan Shocked Monomict Eucrite, Micromount

$5.00
Adding to cart… The item has been added

NWA 8336 was recovered as a single small stone out of the Saharan Desert in Morocco. It was bought by a European dealer in 2014 and classified as a Vestan-origin Eucrite. It has a typical greyish matrix that is coarse grained with occasional clasts. There is not much of this find on the market and I acquired a small fragment to make these micromounts.

Refer to the photo. The black centimeter cube is shown for scale and is not included. You are purchasing a small fragment similar to the one shown. Your purchase will include a labeled gemjar for safe storage.

From the Meteoritical Bulletin entry on NWA 8336 :

Northwest Africa 8336 (NWA 8336)

(Northwest Africa)

Purchased: 2014 Feb

Classification: HED achondrite (Eucrite, monomict)

Petrography: (K. Metzler, IfP) Coarse-grained breccia consisting of gabbroic eucrite clasts and subrounded melt-rock clasts, embedded in a fine-grained clastic matrix of mainly pyroxene and plagioclase fragments. Pyroxene in eucrite clasts and clastic matrix with strong recrystallization textures and relict augite exsolution lamellae. Plagioclase shows strong undulatory extinction. Localized melt pockets with vesicles and fluidal texture of plagioclase grains. Accessory minerals are a silica polymorph, chromite, ilmenite, and very minor metallic iron.

Geochemistry: Pigeonite host: Fs59.3±3Wo4.9±3 (n=9); Augite lamellae, Fs27.2±2Wo42.8±1.7 (n=7). Plagioclase compositions, An92.5±2 (An89-95, n=13).

Classification: Strongly shocked eucrite, containing gabbroic eucrite clasts and melt rock clasts.