Llanite is a rhyolite porphyry that consists of pink to brick-red feldspar and opalescent blue quartz phenocrysts encased within a brown to black groundmass hexagonal shape, and blue color. The blue quartz phenocrysts' coloring can range from light blue to dark blue.

Llanite is a rhyolite porphyry that consists of pink to brick-red feldspar and opalescent blue quartz phenocrysts encased within a brown to black groundmass hexagonal shape, and blue color. The blue quartz phenocrysts' coloring can range from light blue to dark blue.