Tinted detail of a photo: Polarised-light micrograph of a large bright blue crystal with a dark rim and cracks, surrounded by a dense mesh of small needle-shaped crystals in pink, yellow and blue.
GMPV
Geochemistry, Mineralogy, Petrology & Volcanology

ophiolite

The strangest rock you’ve probably never heard of

The strangest rock you’ve probably never heard of

In this blog I’m going to talk a bit about one of my favourite rocks – the strangest rock you’ve probably never heard of – listvenite. Listvenite (sometimes spelt listwanite or listwaenite) is the product of a chemical reaction between peridotite and carbon dioxide, and it is truly strange! I first came across listvenites working …[Read More]