Basalt Rock Sample - Geological Specimen for Education & Collection #123396 (License: Personal Use)

The image displays a natural basalt rock fragment with a porphyritic texture-larger phenocrysts of plagioclase feldspar and possibly pyroxene stand out against a finer-grained groundmass. The surface is irregular and unpolished, revealing the rock’s volcanic origin and rapid cooling history. Minor vesicles and mineral inclusions add to its diagnostic geological features.

Used on educational geology websites, museum digital collections, or online rock identification guides; serves users seeking visual reference for volcanic rock classification, academic study, or hobbyist mineral collecting.