Bird's-eye porphyry

Jump to navigationJump to search Save 10% on Citrus trees with code CITRUS

A name given by prospectors and miners to a fine-grained igneous rock having small phenocrysts, particularly if they are quartz, from a fancied resemblance to birds' eyes. Hess

Source: Dictionary of Mining, Mineral, and Related Terms

Sponsor: new york city std testing