Zinc sulphide exists with two different crystal structures, the cubic zinc blend (top diagram) and the hexagonal Wurtzite (lower diagram). In the zinc blend structure the sulphur ions form an fcc ...

Thus we have four anions (FCC) and four cations, which corresponds with the stoichiometry of the salt (1:1). occupying the tetrahedral holes. Remember that the tetrahedral holes are found between each ...

the team confirmed that enhancing the uniformity of lithium growth resulted in a stable tetrahedral crystal structure, ...