lignite
Low-grade fuel
Lignite is a soft, brownish-black coal—the lowest rank of coal, formed from peat under moderate pressure over millions of years.
It contains more moisture and less carbon than harder coals like bituminite or anthracite, making it less efficient as fuel.
Also called brown coal.
The power plant burned lignite mined from nearby deposits.
Waterlogged decomposed vegetation
- anthraciteHighest-grade coal variety
- bituminousContaining natural tar
- briquetteCompressed combustible block
- seamJoined fabric edge
vein · deposit · calorific · combustion · carbonization · oxidation · humic · brown coal
Formed from deposited material
- strataParallel geological layers
- formationCreation or arrangement
- depositPlace for safekeeping
- bedFurniture for slumber
seam · Tertiary · Miocene · Paleogene · basin · outcrop · stratigraphy · deposition
Facility producing electrical energy
- electricityEnergy from charged particles
- thermalPertaining to warmth
- combustionExothermic reaction with oxygen
- boilerWater-heating vessel
generation · emissions · carbon · greenhouse · turbine · megawatt · gasification · fuel
Act of unearthing
- overburdenLoad beyond capacity
- strippingRemoving outer layers
- open-pitExcavated from exposed ground
- quarryPit for extracting rock
dragline · extraction · strip-mining · pit · spoil · reclamation · surface mining · haul
peat
Waterlogged decomposed vegetation
- anthraciteHighest-grade coal variety
- bituminousContaining natural tar
- briquetteCompressed combustible block
seam · vein · deposit · calorific · combustion · carbonization · oxidation · humic · brown coal · jet
sedimentary
Formed from deposited material
bed · seam · Tertiary · Miocene · Paleogene · basin · outcrop · stratigraphy · deposition · claystone
power plant
Facility producing electrical energy
- electricityEnergy from charged particles
- thermalPertaining to warmth
- combustionExothermic reaction with oxygen
boiler · generation · emissions · carbon · greenhouse · turbine · megawatt · gasification · fuel
excavation
Act of unearthing
- overburdenLoad beyond capacity
- strippingRemoving outer layers
- open-pitExcavated from exposed ground
quarry · dragline · extraction · strip-mining · pit · spoil · reclamation · surface mining · haul · bench
- fossil fuelspetroleum, crude oil, natural gas, coal, anthracite
- mineralsquartz, marble, granite, limestone, sandstone
- energy sourcesoil, gas, coal, solar, wind
- Flammablesgasoline, kerosene, propane, butane, acetone
- fuelfuel, diesel, gasoline, petroleum, crude oil
- coalanthracite, bituminous, coal seam, hard coal, coal bed
lignitesolar power
Energy derived from sunlight
wind energy · hydroelectric power · nuclear energy · clean energy · renewable energy
- lignite miningHarvesting soft, brownish coal