Which of the following silicate clays would be least apt to be formed from the mere alteration of 70 primary minerals?

Question

Quizplus · Accepted Answer

Iron and aluminum oxides are not primary minerals, and therefore cannot be formed from the alteration of other primary minerals. The other options are all silicate clays that can be formed from the alteration of primary minerals, with varying degrees of likelihood depending on the specific conditions of the alteration.

Which of the Following Silicate Clays Would Be Least Apt