21001-149 - NWA Possible Achondrite Meteorite Hypabyssal Igneous Rock. In study. 6.1 g Alanqa saharica †Ceratarges sp
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Description
†Ceratarges sp
Ulna and one phalanx can be recognized
Still nowadays there have not been many specific studies about these agile carnivorous
• Ordovician of Canada (Northwest Territories
Chennaoui Aoudjehane
21001-149 - NWA Possible Achondrite Meteorite Hypabyssal Igneous Rock. In study. 6.1 g Alanqa saharica †Ceratarges spPetrographic 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
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