Which Major Islands and Minerals of the World term is correctly associated with important identifying fact: “used in plaster and cement manufacture”, and also with “a hydrated calcium sulphate mineral”?

Correct Answer: Option B — Gypsum. Gypsum is correct because it is used in plaster and cement manufacture. Gypsum is also associated with a hydrated calcium sulphate mineral. A further identifying fact is that Gypsum is used in plaster and cement manufacture. Another useful fact is that Gypsum is associated with a hydrated calcium sulphate mineral. Why the other options are incorrect: Option A — Mica: It is valued as an electrical and thermal insulator and is associated with a sheet silicate mineral group; those are the identifying facts of Mica. Option C — Greenland: It is the world's largest island that is not a continent and is associated with located between the Arctic and North Atlantic oceans; those are the identifying facts of Greenland. Option D — New Guinea: It is politically divided between Indonesia and Papua New Guinea and is associated with located north of Australia in the western Pacific; those are the identifying facts of New Guinea. Exam Takeaway: Link Gypsum with “used in plaster and cement manufacture” and “a hydrated calcium sulphate mineral” for quick revision.