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

Chennaoui Aoudjehane

Arcticeraurinella

†Ceratarges sp

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

P ( office cherifien des phosphates )

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