Which term denotes minerals formed with diamonds at great depths and carried to the surface by kimberlite or lamproite conduits?

Which term denotes minerals formed with diamonds at great depths and carried to the surface by kimberlite or lamproite conduits?

• A. Habit
• B. HPHT
• C. Indicator minerals
• D. Igneous

Answer: (C)

Indicator minerals are minerals that crystallize and stay stable at the great depths of the mantle and are carried to the surface together with diamonds by kimberlite or lamproite magmas. Their presence signals diamonds because they form under the same deep conditions and are commonly extracted from the same mantle-derived pipes that transport diamonds to the surface. When exploration teams find these minerals, especially within kimberlite or related deposits, it points to a potential diamond-bearing source nearby. The other terms don’t fit because habit describes crystal shape, HPHT is a lab method to create diamonds, and igneous is a broad rock class rather than a specific signal mineral set.

Indicator minerals are minerals that crystallize and stay stable at the great depths of the mantle and are carried to the surface together with diamonds by kimberlite or lamproite magmas. Their presence signals diamonds because they form under the same deep conditions and are commonly extracted from the same mantle-derived pipes that transport diamonds to the surface. When exploration teams find these minerals, especially within kimberlite or related deposits, it points to a potential diamond-bearing source nearby. The other terms don’t fit because habit describes crystal shape, HPHT is a lab method to create diamonds, and igneous is a broad rock class rather than a specific signal mineral set.