लिग्नाइट

lignait (aangrezi: Lignite) nikrisht varg ka patthar ka koyala hai. yah katthee rang ka hota hai tatha vanaspatik ootak ke roopaantaran ki praranbhik avastha ko pradarshit karata hai.

nirman

lakhoan varsh poorv vanaspatik vikas ki dar sanbhavat: adhik tej thi. vanaspatik padarthoan ka sanchayan tatha unake jiv rasayanik kshay se pit ki rachana huee, jo galit kashth ki bhaanti hota hai. yah pratham avastha thi. sanbhavat: dvitiy avastha mean mittiyoan adi ke, jo yugoan tak pit ke oopar avasadit hoti rahian, dabav ne jivanuoan ki kriyaoan ko samapt kar diya aur pit ke padarth ko adhik saghan tatha jalarahit ek lignait mean parivartit kar diya. jab lignait par adhik dabav visheshat: kshaitij kshep aur bhi badh jata hai, to lignait adhik saghan ho jata hai tatha is prakar koyale ka janm hota hai.

bharat mean prapti sthan

bharat mean gudaloor tatha paandicheri ke bich sthit tatiy samataloan mean lignait koyala mila hai, jisaka anveshan san 1884 mean hi ho chuka tha. dakshin arkadu kshetr mean 1930 mean bhoobhijnaniyoan ka dhyan neveli ke lignait ki or gaya. 1943-1946 ke madhy bharatiy bhoovaijnanik sarvekshan ne is kshetr mean anek vedhan kie, jinase lagabhag 23 varg mil ke kshetr mean lignait ke astitv ki pushti huee. tatkalin madras mean eeandhan tatha shakti ke abhav ke karan madras ki rajy sarakar ka dhyan lignait ke vikas ki or gaya. san 1949-1951 ke madhy aur bhi anek vedhan kie ge, jinase anuman laga ki is kshetr mean lignait ki matra lagabhag 200 karo d tan hai tatha kshetr ka vistar lagabhag 100 varg mil mean hai. is kshetr ke lagabhag keandr mean sadhe paanch varg mil ka kshetr mila hai. yahaan 20 karo d tan ke lagabhag lignait ke khanan yogy nikshep prapt hue haian, jin par atyant sugamata evan poorn arthik tatha audyogik drishti se kary kiya ja sakata hai. lignait star ki ausat motaee 55 phut hai, jo 180 phut ki gaharaee par sthit hai.

panne ki pragati avastha

adhar

prarambhik

madhyamik

poornata

shodh