Which of the following is a characteristic of framework silicate minerals?
They have a layered structure.
They have a three-dimensional framework structure.
They are typically dark in color.
They are only found in sedimentary rocks.
Framework silicate minerals have a three-dimensional framework structure, meaning that each silicon atom is bonded to four oxygen atoms, which are in turn bonded to other silicon atoms.
Incorrect options
a) Layered structures are a characteristic of sheet silicate minerals.
c) Color can vary widely among different types of silicate minerals and is not a defining characteristic of framework silicates.
d) Framework silicates are commonly found in igneous and metamorphic rocks, as well as some sedimentary rocks