20999-59 - NWA Possible Achondrite Meteorite Porphyritic Basalt. In study. 192 g Invertebrates In the same matrix we

In the same matrix we can observe another emerging shark tooth tip

Beautiful plaque containing the remains of many stems of this species of moroccan crinoid (Scyphocrinites)

and clusters of refractory materials that often form during the discharge phase of lightning strikes propagating into silica-rich quartzose sand

-Globidens phosphaticus (Bardet et al

20999-59 - NWA Possible Achondrite Meteorite Porphyritic Basalt. In study. 192 g Invertebrates In the same matrix wePetrographic description Under petrographic microscope, the sample is a fine grained volcanic rock with olivine and pyroxene phenocrysts, surrounded by a fine grained matrix (Figs. 2 and 3). Phenocrysts show deformation, developing twins and cracks. Olivine grains have a thin rim (Figs. 2 and 3) of iddingsite (reddish border). Pyroxene is pale brown and presents some plagioclase inclusions. The matrix is formed by tabular euhedral plagioclase and