Garnet, a common hard metamorphic mineral used for abrasives, has an internal crystal structure most similar to which other silicate mineral?
A) biotite
B) plagioclase feldspar
C) olivine
D) augite

Question

Quizplus · Accepted Answer

Garnet and olivine share a similar structure in that both are nesosilicates, meaning they have isolated silica tetrahedra (SiO4) structures. This contrasts with the structures of the other minerals listed, which are part of different silicate groups.

Garnet, a Common Hard Metamorphic Mineral Used for Abrasives, Has