Conservation of mineral resources

Also called: Conservation of minerals · Topic: Mineral Resources of India: Distribution and Conservation · NCERT: Class 10, Ch 5 "Minerals and Energy Resources"; Class 12, Ch 5 "Mineral and Energy Resources"

Meaning

Conservation of mineral resources means using minerals carefully and in a planned way, because they are non-renewable (they form far more slowly than we use them). The methods include better technology for low-grade ores, recycling scrap metal, using substitutes for scarce metals, shifting to renewable energy and cutting exports of strategic and scarce minerals. It matters because India's workable mineral stock is limited and mining keeps getting costlier, so wasting minerals today leaves less for future generations.

Explanation

Why minerals need conservation (cause → process → result)

• Minerals are non-renewable.
• They form over millions of years through geological processes such as cooling of magma, deposition in sedimentary layers, and weathering.

• Humans use them up within decades. Once used, they do not come back in a human lifetime.

• Workable deposits are a tiny share of the Earth's crust.

• Most of the crust holds minerals in very low amounts.

• Only a small fraction is rich enough to mine at a profit.

• Mining gets costlier over time.

• Mines first take the shallow, high-grade ore (ore with a high share of metal).
• Later, miners must dig deeper, and the ore grade (the share of useful metal in the rock) falls.

• So each tonne of metal needs more digging, more energy and more money.

• Result: the stock is finite and costs keep rising, so India must plan its mineral use for the long term.

Measures of conservation (NCERT)

• Planned, sustainable use: meet today's needs without using up the share of future generations.
• Better technology for low-grade ores: makes poor ores usable at low cost.
• Beneficiation: removing waste rock to raise the metal content of an ore.

• Pelletisation: rolling iron-ore fines (dust-like particles) into small balls that a blast furnace can use.

• Recycling of scrap metal: old metal is melted and reused. This matters most for copper, lead and zinc, because India's reserves of these are meagre.

• Substitutes for scarce metals: a common material replaces a rare one, e.g. aluminium or plastic in place of copper in some uses.
• Renewable energy in place of exhaustible fuels: solar, wind, tidal and other renewable energy replaces coal, petroleum and natural gas. This saves fossil-fuel minerals.
• Less export of strategic and scarce minerals: scarce minerals are kept at home so reserves last longer (Class 12 point).

Modern tools: circular economy and urban mining

• Circular economy: materials are reused, recycled and recovered instead of being dumped after one use.
• Urban mining: recovering metals from city waste, mainly e-waste (old phones, computers and batteries).

• One tonne of e-waste can hold more metal than one tonne of natural ore.

• Steel Scrap Recycling Policy 2019: sets up a system to collect, take apart and process scrap from old vehicles and other sources.

• The scrap goes back to steel makers.

• So they need less iron ore.

• Scientific mining at the mine itself:

• Mineral Conservation and Development Rules (MCDR) require miners to avoid wasting ore, store low-grade ore separately for later use, and restore land after mining.
• Star rating of mines: the Indian Bureau of Mines (IBM) rates mines from 1 to 5 stars on sustainable mining (land restoration, use of waste, care for local people).

Where it occurs

• India, national level:
• National Mineral Policy 2019: the framework for sustainable mining, exploration and mineral governance.

• Steel Scrap Recycling Policy 2019: scrap from old vehicles and other sources goes back into steel making.

• Critical Mineral Recycling Incentive Scheme (approved by the Union Cabinet, 2025):

• Size: ₹1,500 crore, part of the National Critical Mineral Mission (NCMM) [2].
• Period: FY 2025-26 to FY 2030-31 [2].
• Feedstock (the waste it recycles): e-waste, lithium-ion battery (LIB) scrap and other scrap such as catalytic converters from old vehicles [2].
• Incentive: a 20% capex subsidy (capex: money spent to build or buy plant and machinery), plus an opex subsidy (opex: money spent to run a plant) linked to extra sales over the base year 2025-26 [2].
• One-third of the money is kept for small and new recyclers, including start-ups [2].

• Target: at least 270 kilotonnes of yearly recycling capacity, about 40 kilotonnes of critical minerals a year, about ₹8,000 crore of investment and about 70,000 jobs [2].

• At mine level:

• Indian Bureau of Mines (IBM, 1948) approves mining plans and checks that minerals are conserved in mines.

• 68 mines got a five-star rating for 2022-23 and were honoured on 7 August 2024 [3].

• Where recycling matters most: copper, lead and zinc, which are scarce in India.

• Where low-grade ore technology matters: iron ore, where pelletisation turns fines into usable furnace feed.

Don't confuse with

• Preservation: preservation means not using a resource at all. Conservation means using it wisely, with planning, recycling and less waste.
• Recycling vs substitution: recycling reuses the same metal (scrap copper becomes new copper). Substitution replaces a scarce metal with a common material (aluminium or plastic in place of copper).
• Beneficiation vs pelletisation: beneficiation raises the metal content of an ore by removing waste rock. Pelletisation rolls iron-ore fines into balls for the blast furnace. It changes the form of the ore, not its grade.
• Urban mining vs conventional mining: urban mining recovers metals from city waste such as e-waste. Conventional mining digs ore from the Earth's crust.

Prelims Hooks

• NCERT: scrap recycling matters most for copper, lead and zinc, because India's reserves of these are meagre.
• Pelletisation is linked to iron-ore fines. Beneficiation means removing waste rock to raise the metal content. Both are ways to use low-grade ore.
• Critical Mineral Recycling Incentive Scheme: ₹1,500 crore, FY 2025-26 to FY 2030-31, under NCMM. Feedstock is e-waste, LIB scrap and catalytic converters [2].
• The same scheme gives a 20% capex subsidy and keeps one-third of its money for small and new recyclers [2].
• 2019 saw both the National Mineral Policy and the Steel Scrap Recycling Policy.
• IBM (1948) checks conservation of minerals in mines and runs the star rating. 68 mines got five stars for 2022-23 [3]. Trap: GSI explores minerals; it does not regulate mines.

Mains Points

• Why conserve (GS-III):
• Minerals are finite, workable deposits are a tiny share of the crust, and costs rise as mines go deeper and ore grades fall.

• Responses: beneficiation and pelletisation of low-grade ores, scrap recycling (Steel Scrap Recycling Policy 2019), substitutes, renewable energy and less export of strategic minerals.

• Circular economy and critical-mineral security:

• Urban mining of e-waste and LIB scrap under the ₹1,500 crore scheme aims at 270 kt of recycling capacity and about 40 kt of critical minerals a year [2].

• This reduces import dependence and e-waste pollution at the same time.

• Conservation at the mine:

• MCDR (store low-grade ore, avoid waste, restore land) and IBM star rating push scientific mining, with 68 five-star mines for 2022-23 [3].
• A remaining gap is weak state-level control of minor-mineral mining such as sand, which wastes the resource and damages river beds.

Related concepts

• Mineral exploration stages
• MMDR Amendment Act 2023

Read more

• Conservation of minerals and mineral governance