Q52.
Consider the following minerals: 1. Bentonite 2. Chromite 3. Kyanite 4. Sillimanite In India, which of the above is/are officially designated as major minerals?
Answer
D
Explanation
Bentonite is essentially a highly plastic clay containing not less than 85% clay mineral, montmorillonite. It gets its name from the place where its presence and usages were first discovered, Fort Benton, America. As per Govt. of India Notification S.O. 423(E) dated 10th February 2015 Bentonite has been declared as