The correct answer is: C. Barytes
Barytes is a mineral that is found in many parts of the world. It is a heavy, white mineral that is used in a variety of industries, including the paint, paper, and rubber industries. Gumma and Darang are two villages in India that are famous for their baryte mines.
Rock salt is a mineral that is found in many parts of the world. It is a white, crystalline mineral that is used in a variety of industries, including the food, chemical, and pharmaceutical industries. Rock salt is not found in Gumma and Darang.
Slate is a metamorphic rock that is found in many parts of the world. It is a dark, gray rock that is used in a variety of industries, including the construction, roofing, and flooring industries. Slate is not found in Gumma and Darang.
Mica is a mineral that is found in many parts of the world. It is a transparent, shiny mineral that is used in a variety of industries, including the electronics, electrical, and insulation industries. Mica is not found in Gumma and Darang.