mineralogy

Nature Geoscience, Published online: 09 June 2026; doi:10.1038/s41561-026-02001-5 Iron hydride in the Earth’s inner core may exist in a superionic state, according to high-pressure and high-temperature experiments at relevant conditions. Accompanying slow diffusion suggests that the inner core could retain hydrogen on geologic timescales.

How do hydrothermal minerals form? Our ELI today gives the answer - "Interactive hydrothermal mineralisation: ‘the rock with the hole’ hydrothermal mineralisation demo". This ELI is a demonstration of how hydrothermal fluids flow through rocks, presented in a way to interact with pupils. Other activities related to minerals can be found in our Earth Materials, Minerals category.

The EGU Geochemistry, Mineralogy, Petrology and Volcanology division’s early career scientists committee is excited to announce out 15th edition of EGU GMPV campfires – Experimental Petrology Special Edition! Our speakers on Wednesday 1st December 4pm CET will be:   Kara Brugman   Post-doc at Carnegie Institution for Science, Earth & Planets Laboratory Presenting:  “Making exoplanet magma: First …

The 10th edition  the Geochemistry, Mineralogy, Petrology and Volcanology Division’s early career scientists talks (EGU campfires) will be on Wednesday 19th May 3pm CEST. Our speakers are: Mallika Jonnalagadda (Assistant Professor @ Savitribai Phule Pune University) – Geodynamic evolution of the mafic-ultramafic rocks of Spontang Ophiolite Complex, Ladakh NW Himalaya, India Jonas Biren (PhD stude…

What is Jasper? Jasper is an opaque variety of Chalcedony , and is usually associated with brown, yellow , or reddish colours, but may be used to describe other opaque colours of Chalcedony such as dark or mottled green, orange, and black. Jasper is almost always multicoloured, with unique colour patterns and habits. Jasper , an aggregate of microgranular quartz and/or chalcedony and other minera…