Mammoth hair is pretty cool, this is more than 12000 years old!! #FossilFriday #GeoscienceBluesky ⚒️🧪🦣

The answer to this Guess the Gem is vesuvianite!! This mineral was named after the volcano Mount Vesuvius, whose eruption destroyed Pompeii. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Time for a Guess the Gem!! What mineral do you think these gems are? Hint: it’s named after a very famous volcano in Italy. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Some gorgeous deep red dogtooth rhodochrosites from Uchucchacua Mine, Peru. Always loved seeing treasures like this!! #MineralMonday #GeoscienceBluesky ⚒️🧪

The cool skull of the huge ”shield lizard”, Scutosaurus karpinskii, from the Permian. #FossilFriday⚒️🧪

Quite the vibrant ruby!! Ruby is a variety of the mineral species corundum. #MineralMonday #GeoscienceBluesky ⚒️🧪

A handful of fold. Always fun to come across cool samples!! #FridayFold #GeoscienceBluesky ⚒️🧪

One of my favourites!! You might be used to seeing cubes of fool’s gold but sometimes pyrite is more pyramidal in shape. #MineralMonday #GeoscienceBluesky ⚒️🧪

A stunning melding of palaeontology and mineralogy (well mineraloid-ology) in this opalized plesiosaur vertebra. Isn’t it gorgeous? #FossilFriday #GeoscienceBluesky ⚒️🧪

A bow tie!! This is a classic form of the zeolite mineral stilbite. #MineralMonday #GeoscienceBluesky ⚒️🧪

Happy #FoldFriday and have a nice weekend! ⚒️🧪 Photo from Kirkeporten, Norway. #photography

The roaring Tyrannosaurus rex with its tiny arms. #FossilFriday ⚒️🧪🦖

The latest eruption at Kilauea appears to be starting! We should see large lava fountains soon. Tune in live here: www.youtube.com/watch?v=gXKu...

For this holiday Mineral Monday, I present an itty bitty egg shaped from fluorite. #MineralMonday #GeoscienceBluesky ⚒️🧪

Happy Geologists’ Day!!! Geology is for everyone, especially those who love cool rocks and minerals like this quartz!!! #GeoscienceBluesky #GeologistsDay

I just saw that it’s Geologists Day today!!! To share my excitement about geology, here is one of my favourite types of rock: obsidian!! This is a thin polished slice showing flow banding. #GeologistsDay #GeoscienceBluesky ⚒️🧪

Happy International Geologist's Day! Now for real. Below are the Easter-most igneous rocks out there. The orbicular granite slabs near the Department of the Earth Sciences in Uppsala University. 🧪 ⚒️ #Geology

the Eye of Sauron watching us survey for endangered cacti. #fossilfriday #triassicpark 🧪🦖

Brecciated Catoctin Formation in thin section ⚒️

The answer is the tourmaline group!! There are numerous mineral species in this group and a variety of colours! #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Triple Guess the Gem time!! What mineral group do you think these three gems are? Hint: the cross sections of this group’s crystals would look triangular. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

So not quite a mineral for this week’s Mineral Monday, but this mineraloid opal is such a stunner. #MineralMonday #GeoscienceBluesky ⚒️🧪

The extinct American lion (Panthera atrox), found across North America, was bigger than the lions we see today. #FossilFriday ⚒️🧪

The Society of Mineral Museum Professionals has just joined Bluesky!!! Happy to join this network for mineral and museum news and geoscience discussions! #MineralMonday #MuseumMonday

Have you ever seen mica in the shape of a star? Muscovite is more commonly seen as books of near hexagonal layers. #MineralMonday #GeoscienceBluesky ⚒️🧪

Skull of the cave bear (Ursus spelaeus). A species which, unsurprisingly, have been found a lot in caves. #FossilFriday ⚒️🧪

I love round specimens, especially snowball-like ones!! This is suolunite, a rare mineral. #MineralMonday #GeoscienceBluesky ⚒️🧪

The Ladies Skerrs Dome, part of the larger Berwick Monocline, on the shore. It’s composed of sandstones, limestones, and mudstones. #FridayFold ⚒️🧪

The answer is calcite!! That double refraction means that when you look through a very clear calcite crystal things are doubled. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Time for another Guess the Gem!! What mineral do you think this is? Hint: this mineral has double refraction. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Pink rubellite, usually a variety of elbaite (a tourmaline), in pale purple lepidolite (a mica) looking like a bunch of sea creatures. #MineralMonday #GeoscienceBluesky ⚒️🧪

Skull of Triceratops horridus!! The not so horrible Triceratops genera was one of the last ceratopsians and went extinct during the Cretaceous-Paleogene mass extinction. #FossilFriday ⚒️🧪🦖

San Francisco volcanic field near Flagstaff on the Colorado Plateau, Arizona. Cinder cones formed by Strombolian eruptions. These volcanoes are so young (ky) that they have hardly eroded.

The answer is zircon, a mineral used in geochronology!! #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Another Guess the Gem!! What mineral do you think this gem is? Hint: this mineral is commonly used for the age dating of rocks. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Bright blue cavansite!! They look like bright pom poms! #MineralMonday #GeoscienceBluesky ⚒️🧪

I’m obsessed with this slab of gypsum!! Look at all the squiggly folds and faulting showing the deformation of the evaporite!! #FridayFold #FaultFriday ⚒️🧪

The answer to this Guess the Gem is the mineral quartz!! This mineral is very common and can make some beauties! #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Guess the Gem time!! What mineral do you think these gems are? Hint: it’s very abundant on earth. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Grey bacon? Lace? This is agate, a variety of quartz, with beautiful layers. #MineralMonday #GeoscienceBluesky ⚒️🧪

Love this old fold exhibit showing this gorgeous example of a anticline and a syncline. The oldest rock layers are on the bottom which helps identify the type of fold. These formed from pressure caused by compression. #FridayFold #GeoscienceBluesky ⚒️🧪

Gorgeous technicolour labradorite!! This labradorescence shows a range of colours across the labradorite, a variety of feldspar that is primarily the mineral anorthite. #MineralMonday #GeoscienceBluesky ⚒️🧪

The absolutely massive Patagotitan mayorum!! This sauropod is one of the largest known titanosaur species. It would have been amazing to see something so massive walking around. #FossilFriday ⚒️🧪

To celebrate this year’s International Day of Women and Girls in Science, here is gaidonnayite, named after Dr Gabrielle Donnay, nestled in with some natrolite. She has two minerals named after her!! Two of the very few minerals discovered in Canada named after a woman. #WomenInSTEM #IDWGS ⚒️🧪

SO COOL!! Sulphur taking the shape of a pinecone!! It replaced the original material. #MineralMonday #GeoscienceBluesky ⚒️🧪

The bulky herbivore, Barylambda faberi, a pantodont from the Paleocene. #FossilFriday ⚒️🧪

Olympic curling has to be the sporting highlight of the Scottish geological calendar. 🥌 All the stones come from Ailsa Craig in the Firth of Clyde. The distinctive black spots are (mostly) the very weird and rare amphibole arfvedsonite. #ThinSectionThursday

The answer to this Guess the Gem is watermelon tourmaline!! This tourmaline group variety has crystals with a pink centre and a green rim. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Guess the Gem!! What mineral, group, or variety do you think these gems are? Hint: this variety is named after food. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Look at these gorgeous deep green crystals of uvarovite, some showing that classic garnet crystal shape!! It’s from Outokumpu, Finland. #MineralMonday #GeoscienceBluesky ⚒️🧪