NWA 8021 (Shocked Monomict Gabbroic Eucrite with Vesicles) SOLD OUT

A 185.6g stone was purchased out of Morocco in July of 2013. Slices were prepared by Montana Meteorite Laboratory and classification was done by Dr. Anthony Irving, who determined the stone to be a shocked monomict gabbroic eucrite breccia with a shock stage beyond maskelynite. Irving commented that this level of shock more commonly seen in shergottites than eucrites. What’s most interesting is that this eucrite has VESICLES!!!! The vesicles can be clearly seen on the unpolished back side. Some of the vesicles are larger, but many small ones can be seen scattered throughout. Slices feature a very nicely polished front side displaying gorgeous colors from tan and brown to black and grey. If you look close, you can see the vesicles coming through from the back side. Each slices comes in a quality labeled meteorite display box.

Petrography as follows:
Monomict breccia composed of crystal debris and related small clasts of a gabbroic eucrite lithology. Predominantly exsolved pigeonite and shocked calcic plagioclase (An89.6-90.7Or0.4-0.5, characterized by very patchy, briefringent domains and some vesicles) plus accessory Ti-chromite, fayalitic olivine, rare taenite and regions with quench texture (composed of glassy and fine “herringbone” crystals). In thin section the pyroxene has a distinctive pale brown color with foxy brown regions, and consists of exsolution lamellae of calcic clinopyroxene (Fs26.3-28.9Wo43.5-42.2; FeO/MnO = 26-28) within host orthopyroxene (Fs60.6-60.9Wo2.3-2.6; FeO/MnO = 28-30). Secondary (terrestrial) calcite and barite are present.

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