TiO2 (titanium dioxide, download cif) is the nominal rutile structure. It can be thought of as infinite columns of edge sharing TiO6 octahedra. In addition, each edge-shared oxygen is corner-shared ...

Quartz crystals containing stellate tufts of silvery gray rutile were recently discovered in east-central California. Photomicrograph by Nathan Renfro; field of view 9.48 mm. Recently, author JG ...

Phenomena such as chatoyancy and asterism can occur when oriented needle-like inclusions—mainly of rutile—are present ... have V 3+ as a chromophore substituting for Al 3+ in the crystal structure.

Here we do this by calculating the Madelung constant for the crystal structure of SiO2(beta-cristobalite) , TiO2(rutile), Al2O3 (corrundum) and ZnS(Sphalerite). If the Madeulng constant is correct, ...