MINERALS AND ENERGY RESOURCES

Minerals hamari daily life ka indispensable part hain. Pin se lekar building tak, sab minerals se bante hain. Even food mein bhi minerals hote hain.

Mineral ki Definition

• Geologists define karte hain mineral ko as a "homogenous, naturally occurring substance with a definable internal structure."
• Minerals nature mein varied forms mein milte hain, from hardest diamond to softest talc.

Geographers aur Geologists ka Perspective

• Geographers: Earth ke crust ke part ke roop mein minerals ko study karte hain, landforms ki better understanding ke liye. Mineral resources ki distribution aur associated economic activities mein interest hota hai.
• Geologists: Minerals ki formation, age, aur physical & chemical composition mein interested hote hain.

Mineral Formation Factors

• Particular mineral ka formation depend karta hai physical aur chemical conditions par.
• Isse minerals mein wide range of colours, hardness, crystal forms, lustre, aur density aati hai.

Minerals usually ores mein milte hain. Ore ek mineral ka accumulation hota hai jo other elements ke saath mixed hota hai. Extraction commercially viable hone ke liye mineral content sufficient concentration mein hona chahiye.

Mineral Occurrence ke Main Types

1. Igneous aur Metamorphic Rocks mein:

• Minerals cracks, crevices, faults, ya joints mein milte hain.
• Smaller occurrences ko veins kehte hain, larger ko lodes.
• Formation: Liquid/molten aur gaseous forms mein minerals earth surface ki taraf force kiye jaate hain, jahan wo cool aur solidify ho jaate hain.
• Examples: Tin, copper, zinc, lead.

1. Sedimentary Rocks mein:

• Minerals beds ya layers mein milte hain.
• Formation: Deposition, accumulation, aur concentration ke result se horizontal strata mein.
• Examples: Coal, iron ore (long periods under heat & pressure se), gypsum, potash salt, sodium salt (evaporation se, especially arid regions mein).

1. Decomposition of Surface Rocks se:

• Surface rocks ka decomposition hota hai, soluble constituents remove ho jaate hain, aur residual mass of weathered material bachta hai jisme ores hote hain.
• Example: Bauxite is tarah banta hai.

1. Alluvial Deposits (Placer Deposits):

• Valley floors aur hills ke base ki sands mein milte hain.
• Ye minerals water se corrode nahi hote.
• Examples: Gold, silver, tin, platinum.

1. Ocean Waters aur Ocean Beds mein:

• Ocean waters mein vast quantities mein minerals hote hain, par mostly widely diffused hote hain (economic significance kam).
• Examples: Common salt, magnesium, bromine (ocean waters se).
• Ocean beds mein manganese nodules rich quantity mein milte hain.

India mein Mineral Distribution

• India mein rich aur varied mineral resources hain, but unevenly distributed hain.
• Peninsular rocks: Coal, metallic minerals, mica, non-metallic minerals.
• Western aur Eastern flanks of peninsula (Gujarat, Assam): Petroleum deposits.
• Rajasthan: Non-ferrous minerals.
• North India ke vast alluvial plains: Almost devoid of economic minerals.
• Ye variations geological structure, processes, aur time mein differences ke karan hain.

Mineral Deposit se Mine tak

• Mineral ki concentration, extraction ki ease, aur market se closeness economic viability mein important role play karte hain.
• Jab ye factors favorable hote hain, tab ek mineral 'deposit' ya 'reserve' mine mein convert hota hai.

Metallic minerals ko do main categories mein divide kiya jaata hai: Ferrous aur Non-Ferrous.

Ferrous Minerals

• Wo minerals jinmein iron content hota hai.
• Total metallic mineral production ka three-fourths account karte hain.
• Metallurgical industries ke development ke liye strong base provide karte hain.
• India apni internal demands meet karne ke baad substantial quantities export bhi karta hai.

Iron Ore

• Basic mineral aur industrial development ki backbone.
• India mein abundant resources hain, good quality iron ores ke.
• Magnetite: Finest iron ore, 70% tak iron content. Excellent magnetic qualities, electrical industry mein valuable.
• Hematite: Most important industrial iron ore (quantity wise), 50-60% iron content.
• Major Producing States (2018-19): Odisha, Chhattisgarh, Karnataka, Jharkhand (97% production).

Major Iron Ore Belts in India:

1. Odisha-Jharkhand belt:

• Odisha: High grade hematite ore Badampahar mines (Mayurbhanj aur Kendujhar districts).
• Jharkhand: Hematite iron ore Gua aur Noamundi (Singhbhum district).

1. Durg-Bastar-Chandrapur belt:

• Chhattisgarh aur Maharashtra mein.
• Very high grade hematites Bailadila range of hills (Bastar district, Chhattisgarh) mein milte hain. 14 deposits of super high grade hematite iron ore hain.
• Best physical properties for steel making. Iron ore Japan aur South Korea ko Vishakhapatnam port se export hota hai.

1. Ballari-Chitradurga-Chikkamagaluru-Tumakuru belt:

• Karnataka mein large reserves.
• Kudremukh mines (Western Ghats) 100% export unit hain. Kudremukh deposits world ke largest mein se hain. Ore slurry ke roop mein pipeline se Mangaluru ke pass port tak transport hota hai.

1. Maharashtra-Goa belt:

• Goa aur Ratnagiri district (Maharashtra).
• Ores high quality ke nahi hain, but efficiently exploited. Iron ore Marmagao port se export hota hai.

Manganese

• Mainly steel aur ferro-manganese alloy manufacturing mein use hota hai.
• Requirement: 1 tonne steel banane ke liye nearly 10 kg manganese chahiye.
• Bleaching powder, insecticides, aur paints banane mein bhi use hota hai.

Non-Ferrous Minerals

• Wo minerals jinmein iron content nahi hota.
• India mein reserves aur production satisfactory nahi hai.
• Metallurgical, engineering, aur electrical industries mein vital role play karte hain.
• Examples: Copper, bauxite, lead, zinc, gold.

Copper

• India mein reserve aur production mein critically deficient.
• Properties: Malleable, ductile, good conductor.
• Uses: Electrical cables, electronics, chemical industries.
• Leading Producers: Balaghat mines (Madhya Pradesh), Khetri mines (Rajasthan), Singhbhum district (Jharkhand).

Bauxite

• Aluminium ka ore hai. Clay-like substance jisse alumina aur fir aluminium obtain hota hai.
• Formation: Aluminium silicates rich rocks ke decomposition se.
• Properties of Aluminium: Iron jaise metals ki strength, extreme lightness, good conductivity, great malleability ka combination.
• Major Deposits: Amarkantak plateau, Maikal hills, Bilaspur-Katni plateau region.
• Largest Producer (2018-19): Odisha. Panchpatmali deposits (Koraput district) most important hain.

Metallic minerals ke alawa, non-metallic minerals aur rock minerals bhi important hain.

Non-Metallic Minerals

Mica

• Series of plates ya leaves se bana mineral.
• Easily thin sheets mein split ho jaata hai. Thousand sheets kuch centimeters high mica sheet mein layer ho sakti hain.
• Colours: Clear, black, green, red, yellow, brown.
• Properties: Excellent dielectric strength, low power loss factor, insulating properties, high voltage resistance.
• Uses: Indispensable for electric aur electronic industries.
• Deposits: Northern edge of Chota Nagpur plateau. Koderma-Gaya-Hazaribagh belt (Jharkhand) leading producer. Rajasthan mein Ajmer ke around. Nellore mica belt (Andhra Pradesh) bhi important producer hai.

Rock Minerals

Limestone

• Calcium carbonates ya calcium aur magnesium carbonates se composed rocks ke association mein milta hai.
• Most geological formations ke sedimentary rocks mein paya jaata hai.
• Uses: Cement industry ke liye basic raw material. Blast furnace mein iron ore smelting ke liye essential.

Mining ek challenging activity hai jiske significant environmental aur health impacts hote hain. Minerals finite resources hain, isliye unka conservation crucial hai.

Hazards of Mining

1. Health Hazards for Miners:

• Dust aur noxious fumes inhale karne se miners ko pulmonary diseases ka risk hota hai.
• Mine roofs ke collapse hone ka, inundation (pani bhar jaana), aur coalmines mein fires ka constant threat rehta hai.

1. Environmental Hazards:

• Mining se region ke water sources contaminate ho jaate hain.
• Waste aur slurry ki dumping se land degradation, soil pollution, aur stream & river pollution badhti hai.

Conservation of Minerals

• Industry aur agriculture ki strong dependence hai mineral deposits par.
• Workable mineral deposits earth crust ka insignificant fraction (1%) hain.
• Minerals millions of years mein bante hain, aur hum unhe rapidly consume kar rahe hain.
• Geological processes of mineral formation bahut slow hain, replenishment rate consumption rate se bahut kam hai.
• Isliye, mineral resources finite aur non-renewable hain.
• Rich mineral deposits hamari country ke valuable but short-lived possessions hain.
• Continued extraction se costs badhte hain (kyunki extraction greater depths se hota hai) aur quality decrease hoti hai.

Why Conservation is Necessary?

• Finite Resources: Ek baar use ho gaye toh khatam.
• Slow Formation: Naye minerals banne mein millions of years lagte hain.
• Increasing Demand: Population aur industrialization ke saath demand badh rahi hai.
• Environmental Impact: Mining se environment ko nuksan hota hai.
• Economic Viability: Deep mining expensive hota ja raha hai.

Conservation Strategies

• Sustainable Use: Minerals ka judicious aur planned use.
• Recycling: Metals ko recycle karna (e.g., steel, aluminium).
• Reuse: Products ko dobara use karna.
• Substitution: Minerals ke substitutes dhundhna (e.g., plastic for metal, renewable energy for fossil fuels).
• Improved Mining Technologies: Waste kam karna aur efficiency badhana.
• Policy Implementation: Stricter safety regulations aur environmental laws enforce karna.

Energy har activity ke liye zaroori hai – cooking, lighting, heating, transport, industries. Energy resources ko Conventional aur Non-conventional mein classify kiya jaata hai.

Conventional Sources of Energy

• Wo sources jo long time se use ho rahe hain aur generally non-renewable hote hain (except hydel electricity).
• Examples: Firewood, cattle dung cake, coal, petroleum, natural gas, electricity (hydel aur thermal).

1. Coal

• India mein most abundantly available fossil fuel.
• Nation ki energy needs ka substantial part provide karta hai.
• Uses: Power generation, industrial energy, domestic needs.
• India commercial energy requirements ke liye coal par highly dependent hai.
• Formation: Plant material ke millions of years tak compression se banta hai.

Types of Coal (compression degree, depth, time ke basis par):

1. Peat: Decaying plants in swamps se banta hai. Low carbon, high moisture, low heating capacity.
2. Lignite: Low grade brown coal. Soft, high moisture content. Principal reserves Neyveli (Tamil Nadu) mein, electricity generation ke liye use hota hai.
3. Bituminous: Deep buried aur increased temperatures ke subject. Most popular commercial use mein. Metallurgical coal high grade bituminous hota hai, blast furnaces mein iron smelting ke liye special value rakhta hai.
4. Anthracite: Highest quality hard coal.

Coal Occurrence in India

• Gondwana Coal: 200 million years se zyada old. Major resources Damodar valley (West Bengal-Jharkhand) mein (Jharia, Raniganj, Bokaro). Godavari, Mahanadi, Son, aur Wardha valleys mein bhi deposits.
• Tertiary Coals: 55 million years old. North-eastern states (Meghalaya, Assam, Arunachal Pradesh, Nagaland) mein.
• Location of Industries: Coal bulky material hai, use karne par weight lose karta hai (ash mein convert hota hai). Isliye heavy industries aur thermal power stations coalfields ke paas locate kiye jaate hain.

2. Petroleum (Mineral Oil)

• Coal ke baad India ka next major energy source.
• Uses: Fuel for heat & lighting, lubricants for machinery, raw materials for manufacturing industries.
• Petroleum refineries: Nodal industry for synthetic textile, fertiliser, aur chemical industries.
• Occurrence: India mein mostly anticlines aur fault traps mein milta hai (Tertiary age rock formations).
• Anticlines/domes mein, oil upfold ke crest mein trap ho jaata hai.
• Oil bearing layer porous limestone ya sandstone hota hai. Non-porous layers oil ko upar ya neeche jaane se rokte hain.
• Major Production Areas: Mumbai High, Gujarat, Assam.
• Gujarat: Ankeleshwar most important field.
• Assam: Oldest oil producing state (Digboi, Naharkatiya, Moran-Hugrijan).

3. Natural Gas

• Petroleum deposits ke saath milta hai, crude oil surface par laate waqt release hota hai.
• Uses: Domestic aur industrial fuel, power sector (electricity generation), industries mein heating, raw material (chemical, petrochemical, fertilizer industries), transport fuel (CNG), cooking fuel (PNG).
• Major Reserves: Mumbai High aur allied fields (west coast), Cambay basin. East Coast par Krishna-Godavari basin mein new reserves.
• HVJ Pipeline: Hazira-Vijaipur-Jagdishpur (HVJ) cross country gas pipeline (GAIL India ne banaya) Mumbai High aur Bassein gas fields ko western aur northern India ke fertilizer, power, industrial complexes se link karta hai. India ka gas infrastructure significantly expand hua hai.

4. Electricity

• Aaj ki date mein wide range of applications hain. Per capita consumption development ka index mana jaata hai.
• Generation Methods:

1. Hydro-electricity: Fast flowing water se generate hoti hai (renewable resource). Water hydro turbines ko drive karta hai. India mein Bhakra Nangal, Damodar Valley Corporation, Kopili Hydel Project jaise multi-purpose projects hain.
2. Thermal Power: Coal, petroleum, natural gas jaise fuels ko burn karke turbines drive kiye jaate hain. Ye non-renewable fossil fuels use karta hai.

• Ek baar generate hone ke baad, electricity dono methods se exactly same hoti hai.

Fossil fuels par badhti dependence, rising prices, aur environmental problems ke karan renewable energy sources ki zaroorat badh gayi hai. Inhe non-conventional energy sources kehte hain.

Non-Conventional Sources of Energy

• Ye sources renewable hote hain aur environmental friendly hote hain.
• India mein sunlight, water, wind, biomass ki abundance hai aur inke development ke liye largest programmes hain.

1. Nuclear or Atomic Energy

• Atoms ki structure ko alter karke obtain hoti hai. Heat release hoti hai jo electricity generate karti hai.
• Minerals used: Uranium aur Thorium.
• Uranium: Jharkhand aur Rajasthan ke Aravalli ranges mein.
• Thorium: Kerala ke Monazite sands mein rich quantity mein.

2. Solar Energy

• India ek tropical country hai, isliye solar energy tap karne ki enormous possibilities hain.
• Photovoltaic technology: Sunlight ko directly electricity mein convert karti hai.
• Importance: Rural aur remote areas mein popular ho rahi hai. Large solar power plants set up ho rahe hain jo rural households ki firewood aur dung cakes par dependence kam karenge, jisse environmental conservation aur manure supply mein help milegi.

3. Wind Power

• India mein wind power ka great potential hai.
• Largest wind farm cluster: Tamil Nadu (Nagarcoil se Madurai tak).
• Other important wind farms: Andhra Pradesh, Karnataka, Gujarat, Kerala, Maharashtra, Lakshadweep.
• Nagarcoil aur Jaisalmer wind energy ke effective use ke liye well known hain.

4. Biogas

• Shrubs, farm waste, animal aur human waste se biogas produce hota hai.
• Uses: Domestic consumption (rural areas).
• Benefits: Organic matter ke decomposition se gas milti hai jiski thermal efficiency kerosene, dung cake, charcoal se zyada hoti hai.
• Biogas plants municipal, cooperative, aur individual levels par set up hote hain. Cattle dung use karne wale plants ko rural India mein 'Gobar gas plants' kehte hain.
• Twin benefits: Energy aur improved quality manure.
• Trees aur manure ki loss ko bhi prevent karta hai (fuelwood aur cow dung cakes jalane se).

5. Tidal Energy

• Oceanic tides se electricity generate ki ja sakti hai.
• Method: Floodgate dams inlets across build kiye jaate hain. High tide par water inlet mein flow karta hai aur gate close hone par trap ho jaata hai. Tide fall hone par, retained water pipe ke through sea mein wapas flow karta hai, jo power-generating turbine ko drive karta hai.
• Ideal Conditions in India: Gulf of Khambhat, Gulf of Kuchchh (Gujarat) on western coast, aur Gangetic delta (Sunderban regions of West Bengal).

6. Geothermal Energy

• Earth ke interior se heat use karke heat aur electricity produce karna.
• Earth ki depth ke saath temperature badhta jaata hai. Jahan geothermal gradient high hota hai, wahan shallow depths par high temperatures milte hain.
• Groundwater rocks se heat absorb karta hai aur hot ho jaata hai. Surface par aane par steam mein convert hota hai. Ye steam turbines drive karke electricity generate karti hai.
• India mein several hundred hot springs hain.
• Experimental Projects: Parvati valley (Manikaran, Himachal Pradesh) aur Puga Valley (Ladakh).

Energy economic development ke liye basic requirement hai. Har sector (agriculture, industry, transport, commercial, domestic) ko energy chahiye. Independence ke baad se energy consumption steadily badh raha hai. Isliye, sustainable path of energy development ki urgent need hai.

Why Conserve Energy Resources?

• Increasing Dependence on Fossil Fuels: Coal, oil, gas par dependence badh rahi hai.
• Rising Prices & Shortages: Oil aur gas ke prices badh rahe hain aur potential shortages energy supply ki security par uncertainty create karte hain, jisse national economy ki growth par serious repercussions hote hain.
• Environmental Problems: Fossil fuels ke increasing use se serious environmental problems (e.g., pollution, global warming) hote hain.
• Finite Nature: Conventional energy sources mostly non-renewable hain.

Strategies for Energy Conservation

• Promotion of Energy Conservation: Energy waste ko kam karna.
• Increased Use of Renewable Energy Sources: Solar, wind, tidal, biomass, atomic energy jaise non-conventional sources ka zyada use karna.
• Judicious Use: Limited energy resources ka cautious aur wise use karna.

As Concerned Citizens, Hum Kya Kar Sakte Hain?

• Public Transport: Individual vehicles ki jagah public transport systems use karna.
• Switch Off Electricity: Jab use mein na ho toh lights aur appliances switch off karna.
• Power-Saving Devices: Energy-efficient appliances use karna.
• Non-Conventional Sources: Apne level par non-conventional sources ka use promote karna (e.g., solar water heaters).

Key Mantra

• "Energy saved is energy produced." Iska matlab hai ki jitni energy hum bachate hain, utni hi energy humne effectively produce kar li.