IEAX-1D Thin Section
Item
- Title
- IEAX-1D Thin Section
- Description
- There is a glassy matrix with vesicles ranging in sizes from small to extremely large. There are also many microlites of small, low birefringent minerals showing simple twinning, and some lamellar twinning. There are also larger phenocrysts of the minerals seen throughout the glassy matrix, many of which appear to be heavily fractured or in disequilibrium. There are also a couple medium to high birefringent minerals found throughout the sample, most likely some type of pyroxenes. There are some fractures through the rocks which connect vesicles, but are filled by the glassy matrix. Some portions of this sample are more vesiculated than others. These less vesicular sections contain a lot of fine twinned microlites with a dark red rounded microlite mixed in. There are some large clasts which have been fractured and filled in by the surrounding groundmass. This clast also shows disequilibrium with the surrounding groundmass. One is concentrated with low birefringent twinned minerals, with some higher birefringent phenocrysts.
- Item sets
- omeka
- Media
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