Q6
(a) Explain the various peculiarities inherent in the mineral industry. (15 marks) (b) What is mineral conservation ? Explain how it can be achieved. (15 marks) (c) Describe the classification of magmatic deposits and add a note on "late magmatic deposits". (20 marks)
हिंदी में प्रश्न पढ़ें
(a) खनिज उद्योग की अन्तर्निहित विभिन्न विशेषताओं की व्याख्या कीजिए। (15 अंक) (b) खनिज संरक्षण क्या है ? इसको प्राप्त करने के उपायों की व्याख्या कीजिए। (15 अंक) (c) मैग्मीय निक्षेपों का वर्गीकरण कीजिए तथा "पश्च मैग्मीय निक्षेप" पर टिप्पणी लिखिए। (20 अंक)
Directive word: Explain
This question asks you to explain. The directive word signals the depth of analysis expected, the structure of your answer, and the weight of evidence you must bring.
See our UPSC directive words guide for a full breakdown of how to respond to each command word.
How this answer will be evaluated
Approach
The directive 'explain' demands clear exposition with causal reasoning across all three parts. Allocate approximately 150 words (30%) to part (a) on mineral industry peculiarities, 150 words (30%) to part (b) on mineral conservation, and 200 words (40%) to part (c) on magmatic deposits given its higher mark weight. Structure with a brief introduction acknowledging the interconnected themes of mineral economics and magmatic processes, followed by three clearly labelled sections addressing each sub-part, and conclude with a synthesis on sustainable mineral resource management.
Key points expected
- Part (a): Non-renewability, capital intensity, long gestation periods, price inelasticity, and externalities as core peculiarities of mineral industry
- Part (a): Geographic immobility of deposits and oligopolistic market structure with Indian examples (coal, iron ore)
- Part (b): Definition of mineral conservation as sustainable use plus preservation for future generations
- Part (b): Methods including beneficiation, substitution, recycling, use of scrap, and policy instruments like MMDR Act
- Part (c): Classification of magmatic deposits into early magmatic (chromite, magnetite), late magmatic (titaniferous magnetite, apatite-magnetite), and magmatic hydrothermal
- Part (c): Detailed note on late magmatic deposits: process of liquid immiscibility, oxide-silicate separation, and Indian examples (Ganjam apatite-magnetite deposits, Odisha; Kolar gold field associations)
Evaluation rubric
| Dimension | Weight | Max marks | Excellent | Average | Poor |
|---|---|---|---|---|---|
| Concept correctness | 25% | 12.5 | Precisely defines mineral conservation, distinguishes early/late magmatic processes correctly, and accurately identifies at least five industry peculiarities with correct economic terminology | Covers basic concepts with minor errors in classification or conservation methods; some confusion between early and late magmatic processes | Fundamental misconceptions about magmatic deposit genesis, vague or incorrect definition of conservation, or misidentification of industry characteristics |
| Diagram / cross-section | 15% | 7.5 | Includes labeled diagram for part (c) showing magmatic differentiation sequence or Bushveld-type layered intrusion with late magmatic segregation zones; properly annotated | Simple sketch of layered intrusion or flow chart of conservation methods without proper labels or geological detail | No diagrams where clearly needed, or irrelevant/incorrect illustrations that do not support the explanation |
| Field evidence | 20% | 10 | Cites specific Indian deposits: Sukinda chromite (early magmatic), Ganjam apatite-magnetite (late magmatic), Kolar gold field associations; references actual conservation practices in NALCO or HZL operations | Mentions generic Indian locations without specificity, or cites international examples (Bushveld, Sudbury) without Indian context | No field examples, or fabricated/incorrect deposit associations showing lack of geological knowledge |
| Quantitative reasoning | 15% | 7.5 | Includes quantitative data: India's mineral import dependency percentages, reserve-to-production ratios, or grade-tonnage relationships for specific deposits; conservation potential statistics | Vague references to 'increasing demand' or 'depleting reserves' without specific figures or ratios | No quantitative element, or incorrect/misleading statistics that demonstrate poor understanding of mineral economics |
| Indian / economic relevance | 25% | 12.5 | Integrates National Mineral Policy 2019, MMDR Act 2015 amendments, critical minerals strategy; connects conservation to Atmanirbhar Bharat; discusses India's specific vulnerabilities in mineral security | Brief mention of Indian policies without integration, or generic discussion of economic importance without policy context | Completely ignores Indian context, or makes irrelevant references showing misunderstanding of domestic mineral sector |
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