Advertisement
Grab your lab coat. Let's get started
Welcome!
Welcome!
Create an account below to get 6 C&EN articles per month, receive newsletters and more - all free.
It seems this is your first time logging in online. Please enter the following information to continue.
As an ACS member you automatically get access to this site. All we need is few more details to create your reading experience.
Not you? Sign in with a different account.
Not you? Sign in with a different account.
ERROR 1
ERROR 1
ERROR 2
ERROR 2
ERROR 2
ERROR 2
ERROR 2
Password and Confirm password must match.
If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)
ERROR 2
ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.
Geochemistry
Chemistry In Pictures
Chemistry in Pictures: Crystal from outer space
by Manny I. Fox Morone
November 20, 2023
The people at the Smithsonian Institution National Museum of Natural History were nice enough to give a couple members of the Chemistry in Pictures team a behind-the-scenes look at their mineral collection. For the next couple weeks, we’ll bring you photos of some of the minerals that wowed us, some of which are billions of years old.
These greenish yellow crystals were found in a rare type of meteorite called a pallasite. Unlike the large iron crystals we featured recently that come from asteroids’ cores, pallasites are thought to originate in the boundary between an asteroid’s mantle and core. The mingling of metal and olivine—magnesium iron silicate—represents the variation of materials found in those two layers. Although it’s rare in meteorites, olivine is relatively common in Earth’s crust: when it’s found in gemstone quality, it’s better known as peridot, the birthstone of August.
In writing this post, the Chemistry in Pictures team realized we actually published another post with the same title. Those crystals didn’t come from an asteroid. They were grown by astronauts on the International Space Station. But we think the post is still worth your time to check out.
Credit: Chip Clark/Smithsonian Institution National Museum of Natural History (close-up), Brianna Barbu/C&EN (large sample)
Do science. Take pictures. Win money. Enter our photo contest here.
You might also like...
Advertisement
The power is now in your (nitrile gloved) hands
Sign up for a free account to get more articles. Or choose the ACS option that’s right for you.
Already have an ACS ID? Log in
Join the conversation
Contact the reporter
Submit a Letter to the Editor for publication
Engage with us on X