Scientists have found kaolinite, a mineral that forms in warm, wet conditions on Earth, raising serious questions about Mars’ ancient climate and its potential to have once supported life. A ...

Spinel, MgAl 2 O 4 (download cif), is a rare gemstone that was used to imitate rubies. The structure has face-centered cubic symmetry, and is a little heavy to understand. The general formula is AB 2 ...

Spinels refer to minerals such as magnesium, nickel, or zinc packed tightly into cubic crystals. Spinel oxides have been explored for their potential as active electrochemical oxygen evolution ...