xenolith n (geology) a piece of rock of different origin from the igneous rock in which it is embedded
News & Articles xenolith Pangolin Diamonds Discovers Second Kimberlite in Botswana, Adds Leading Diamond Geologist Manfred Marx to Exploration ... -- New kimberlite found at Tsabong North Project has +20 hectare aeromagnetic anomaly -- Manfred Marx led field team that discovered De Beers' Orapa Diamond Mine, with $1B of annual sales --Volcanic micaceous sandy tuff present with inclusions of pyrope garnets, chromites, autoliths, and mantle xenolith fragments June 18, 2013 - Marketwire