⛏ George the Geologist – Basalt Xenoliths

Basalt is a volcanic rock that comes from melting the mantle of the Earth. The mantle is made up of the iron and magnesium silicate minerals Olivine and Pyroxene. The Pyroxene also sometimes contains calcium. All of the iron gives the basalt its dark grey or black colour.

But, what’s a xenolith? Follow on with George as he explores this important Greek term and the amazing colours produced in this rock from the mantle.
Curious to learn more? Click the link below for George’s field notes to discover more about basalt xenoliths! 
George's Field Notes - Basalt Xenoliths