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 ...
On Wednesday around 5 p.m., officers responded to a home in the 4500 block of Spinel Drive. Fayetteville's police chief said the suspect did have a weapon and negotiations were peaceful.
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