21001-149 - NWA Possible Achondrite Meteorite Hypabyssal Igneous Rock. In study. 6.1 g Alanqa saharica Arcticeraurinella

Arcticeraurinella

• Ordovician of Canada (Northwest Territories

pyroxene and ilmenite microcrysts present a crystal size in the interval 50-140 μm

there is still a lot to be discovered about this ground dwelling herbivore

the sample shows chondrules and rarely chondrules fragments

21001-149 - NWA Possible Achondrite Meteorite Hypabyssal Igneous Rock. In study. 6.1 g Alanqa saharica ArcticeraurinellaPetrographic description The sample is mainly composed of euhedral to subhedral clinopyroxene and olivine phenocrysts in a fine grained groundmass. Clinopyroxene (augite) crystals are zoned, occasionally showing green non pleochroic core. The outer rim of augite crystals show light brown color, probably produced by transformation to pigeonite. Olivines have oxidized edges and mostly transformed to iddingsite. Under polarized light microscope (crossed