Feldspars ____.
A)are only abundant deep in Earth's core
B)never have a tetrahedral crystal structure
C)are nonferromagnesian silicates
D)are carbonate minerals
E)have iron as a major element

Question

Quizplus · Accepted Answer

Feldspars are a group of minerals that are classified as nonferromagnesian silicates, which means they do not contain significant amounts of iron or magnesium. They are one of the most abundant minerals on Earth's crust, and they have a framework of tetrahedral crystal structure, which consists of silicon and oxygen atoms. Feldspars are not carbonate minerals, and the other answer choices are also incorrect.