Since 1998 the American Geosciences Institute has been running an annual celebration of all things geoscience – Earth Science Week. From its inception, Earth Science Week has grown in popularity and is now celebrated across the planet. This year Earth Science Week will run from 11 to 17 October and the theme of the week is “Earth Materials in Our Lives.” As the American Geoscien ...[Read More]
Each month we feature specific Divisions of EGU and during the monthly GeoRoundup we will be putting the journals that publish science from those Divisions at the top of the Highlights roundup. For September, the Divisions we are featuring are: Energy, Resources and Environment (ERE) and Geochemistry, Mineralogy, Petrology and Volcanology (GMPV). They are served by the journals: Geoscientific Mode ...[Read More]
Blue Olivine set in a matrix of pyroxene, magnetite and plagioclase in a basalt collected by the photographer, Bernardo Cesare, on the shore of the Sea of Galilee, Israel. Polarized light photomicrograph. Crossed polarizers and red tint plate. Width c. 2.7 mm. Who may have been throwing this stone a couple millennia ago? Description by Bernardo Cesare, after the description on imaggeo.egu.e ...[Read More]
One of the most famous identification methods in the study of mineralogy is the Mohs Scale of Hardness. A comparative scale, based on the hardness of each mineral, it is a way geoscientists can compare minerals to each other and organise them based upon an easily testable physical characteristic. Each level of hardness has a value, from 1 (the softest) to 10 (the hardest) and each number is associ ...[Read More]
In this photo taken on the Isle of Elba in Italy you can see several radiating crystals of greenish Hedenbergite, inter-grown with blackish coloured Ilvaite in skarn bodies. Skarn is an unique formation that formed as a result of the interaction between geothermal fluids and the host rock. In this case the geothermal fluids come from the Late Miocene Porto Azzurro monzogranite, and Mesozoic marble ...[Read More]
Like a reasonably large proportion of the population, I have colour vision deficiency (also known as colour deficient vision or colourblindness). I’m not going to get into the technical aspects of what this is like as they are covered well here and here, and you can do an Ishihara test, and other tests here, to check your own vision. The other reason I’m not going to discuss the technicalities of ...[Read More]
This is a crossed polarized light photomicrograph of an impact spherule; a small mineralisation made when a meteorite hits the Earth and melts the rock at the point of impact, from Barberton Greenstone Belt, in South Africa. These spherules are the only remnants of Early Earth’s meteorite impact history, from between of 3.2 and 3.5 billion years ago. In this photo you can see the K-feldspar ...[Read More]
Hi Nadine, thanks for speaking with us today, can you tell us a little bit about your background and how you got to where you are now? Thank you for inviting me! I’m a geologist and the Assistant Curator of Fossil Mammals at the Natural History Museum, London. I studied MSci Geology at University College London and I absolutely enjoyed the subject. It was really interesting to learn about the geol ...[Read More]
Mineralogy, as a subject, often has a hard time. Despite it’s place at the core of the traditional geological sciences, and its importance in a huge variety of other subjects, mineralogy sometimes has a reputation of being complicated and inaccessible and, well, some people have even called it boring. This is also related to the way that minerals are often hugely misunderstood by non-geoscie ...[Read More]
My name is Ned Staniland and I am a third year PhD student in space physics at Imperial College London. I study the magnetic field of Saturn using data from the Cassini-Huygens mission that was launched in 1997. In July 2020, I was lucky enough to be EGU’s first intern where I worked in their policy and communications team. Finding an Internship Since the beginning of my PhD, I have kept an eye ...[Read More]
