Great Artesian Oil and Gas says that work on the Spinel 3D Seismic Survey commenced on December 15, 2006. Covering a total of approximately 500 sq km of portions of PELs 106 and 91, this survey ...

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 ...