20998-14 - NWA Possible Achondrite Meteorite Porphyritic Basalt. In study. 233g Native copper The baryte group consists of

The baryte group consists of baryte

08 in) - 47 mm (1

Borkopleura

The eyes facets are quite well preserved

Llandovacaste

20998-14 - NWA Possible Achondrite Meteorite Porphyritic Basalt. In study. 233g Native copper The baryte group consists ofPetrographic description Under petrographic microscope, the sample is formed by phenocrysts mostly of olivine, clinopyroxene, plagioclase and in a smaller proportion quartz and orthopyroxene in a fine matrix (Figs. 2 and 3). The texture is porphyritic. Amygdules are scarce in the sample and are filled by calcite. The olivine grains are embayed and partially reabsorbed. Pyroxene crystals show complex zoning patterns, range from concentric to patchy.