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Indian geography (minerals): Identify India’s most extensive commercially valuable monazite (thorium) sand deposits. Focus on coastal placer deposits known for thorium-bearing monazite sands. Choose the correct location.

Difficulty: Easy

Correct Answer: Kerala coast (Travancore–Malabar belt)

Explanation:

Given/Context

  • Monazite sands rich in thorium occur in beach placers.

ReasoningIndia’s best-known extensive monazite placers are along the Kerala coast (e.g., near Kollam/Quilon and Aluva), with additional significant pockets in Tamil Nadu and Odisha. The most extensive, commercially valuable deposits are classically associated with Kerala’s Travancore–Malabar belt.

Final AnswerKerala coast (Travancore–Malabar belt).

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