Minerals that contain silicon and oxygen and usually one or more other elements.

Minerals that contain silicon and oxygen and usually one or more other elements.

• A. Silicates
• B. Feldspars
• C. Micas
• D. Oxides

Answer: (A)

Silicate minerals are minerals that contain silicon and oxygen, built around silicon-oxygen tetrahedra. This framework is the defining feature that almost always includes other elements such as aluminum, iron, magnesium, potassium, or calcium. Because the statement describes minerals with silicon and oxygen (often with other elements), it fits the broad silicate group. Feldspars and micas are specific members of silicates, while oxides are minerals bonded to oxygen without the silicon-oxygen framework, so they don’t fit this description as a group.

Silicate minerals are minerals that contain silicon and oxygen, built around silicon-oxygen tetrahedra. This framework is the defining feature that almost always includes other elements such as aluminum, iron, magnesium, potassium, or calcium. Because the statement describes minerals with silicon and oxygen (often with other elements), it fits the broad silicate group. Feldspars and micas are specific members of silicates, while oxides are minerals bonded to oxygen without the silicon-oxygen framework, so they don’t fit this description as a group.