Microperthitic Texture: Broad lamellae of albite traversing tartan twinning of microcline
Spherulitic texture in rhyolite: quartz and alk.feldspar needles radiating from a common nucleus.
Plagioclase spherulite in dolerite
Classification of igneous rocks based on their silica and alkali contents
Dunite: olivine-rich rock showing granular texture
Porphyritic basalt (This sample obtained by Apollo 12 mission to the Moon). It shows phenocrysts of olivine and pyroxene in a matrix of plagioclase and pyroxene.
Picritic basalt. Glomerocrysts of olivine in groundmass of olivine, pyroxene and plagioclase
Rhyolite: phenocrysts of quartz and sanidine in a fine-grained to glassy groundmass
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