The correct answer is: A. Magnesite.
Magnesite is a mineral that is composed of magnesium oxide and magnesium carbonate. It is a white, gray, or brown mineral that is found in veins and deposits. Magnesite is used in a variety of industries, including the chemical industry, the metallurgical industry, and the refractory industry.
Kanti, Mishwa-Talyana, Tiler Dhar and Dhala-Pipli are famous sites for magnesite deposits in India.
Barytes is a mineral that is composed of barium sulfate. It is a white, yellow, or gray mineral that is found in veins and deposits. Barytes is used in a variety of industries, including the oil and gas industry, the paint industry, and the paper industry.
Gold is a mineral that is composed of gold. It is a yellow, orange, or red mineral that is found in veins and deposits. Gold is used in a variety of industries, including the jewelry industry, the electronics industry, and the dentistry industry.
Copper is a mineral that is composed of copper. It is a red, orange, or brown mineral that is found in veins and deposits. Copper is used in a variety of industries, including the electrical industry, the construction industry, and the transportation industry.