Just to extend on our theme for this week a little – how about a crystal structure that glows in UV light? It’s also one of the minerals in this post we mentioned yesterday, so it ties up things very nicely!
What does it look like?
What is it?
Andersonite is a rare Uranium carbonate mineral that was first found in Arizona in the US. It’s fluorescent and will glow a yellowy-green under UV light. As you can see hinted in the picture, it’s crystal structure is quite complex – with units of carbonate (CO3, brown carbon atoms surrounded by red oxygen atoms), sodium (yellow atoms) and calcium (blue) atoms which all surround the uranium (green) atoms. Because of the way uranium are made up, they can bond with up to 6 other atoms at a time. This makes for quite a variety of minerals that it can form.
Where did the structure come from?