This mineral looks so delicious, I could gobble it up like candy!
Fluorite (also called fluorspar) is a mineral consisting of calcium fluoride, CaF2. It belongs to the halide minerals, alongside common salt (called halite in its mineral form). Halide minerals crystalize in the cubic (isometric) system, which means that its crystals are basically a cubic motif. Crystal twinning is common and adds complexity to the observed crystals. Its cleavage is perfect, as can be seen in this picture.
These are perfectly cubical salt crystals, spotted at Salar de Uyuni, the world’s largest salt flat, located in Bolivia. Each crystal belongs to a specific crystal system – for salt it’s the cubic system. This means that the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals,
This is a polished marble of a pallasite – a type of stony-iron meteorite, consisting mostly of centimeter-sized olivine crystals. Olivine is a silicate mineral often found in the Earth’s mantle. Pallasites were once thought to originate at the core-mantle boundary of differentiated asteroids that were subsequently shattered through impacts, but that theory has been replaced recently by another one, which
The Astro-geology team working on analyzing the photos from Curiosity Rover is having a busy week. They recently posted this amazing picture and announced their plans for the future. The plan for the weekend is to do a detailed analysis of the outcrop in front of us and then drive away and do some untargeted observations. Sol 1109 includes ChemCam
The Ferpècle Glacier is a 6.5 km (4.0 mi) long glacier (2005) situated in the Pennine Alps in the canton of Valais in Switzerland. Image credits: Maël Torog. Mihai Andrei Andrei’s background is in geophysics, and he published his first scientific paper when he was still an undergrad; now, his main focus is on how geology and geophysics can be applied
NASA recently uploaded a strikingly beautiful photograph on their website showing a petrified sand dune on Mars. The image was actually pieced together from several shots taken using Curiosity’s Mast Camera (Mastcam) on August 27th. From end to end, the panorama spans a full 135 degrees of other-worldly awesomeness, with east to the left and southwest to the right.
Today’s Spain was close to Greenland, Tibet and Australia were neighbors, and Africa and South America were closely hugging – as can be roughly seen from today’s coastline. This image shows that the Earth is not a static rock – but an active and mobile system.
These brownish hills are actually limestone mounds in Bohol province in the Philippines. They are normally covered by grass, but turn a deep-brown colour during the dry season, looking more and more chocolatey. There are about 1,500 mounds in the Philippines; similar karst mounts exist in Croatia and Slovenia, northern Puerto Rico, and Pinar del Río Province, Cuba – but they’re not covered
This week, we’re going for something a little different: this is the first photo from the Deep Space Climate Observatory Satellite, aNOAA Earth observation and space weather satellite launched by SpaceX on a Falcon 9 launch vehicle on February 11, 2015 from Cape Canaveral. This is the Earth in 2015, as seen from outer space. It’s a remake of the famous