Examlex
Which of the following statements is (are) correct?
Silica
Silicon dioxide (SiO2), appearing either as a relatively pure form in a mineral (e.g., quartz) or as a component in more chemically complex minerals and rocks.
Cube-Shaped Crystals
Solids with an atomic structure that forms into a cube shape, commonly observed in minerals such as pyrite and halite.
Sulfide
A chemical compound that consists of sulfur and one or more elements, commonly found in ore minerals and as byproducts of industrial processes.
Silica Tetrahedron
A structural unit of silicon ion surrounded by four oxygen ions, forming the basic building block of silicate minerals.
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