गैलेना
gailena (aangrezi: Galena) sisa (laid) ka mukhy khanij hai. prakriti mean sisa dhatu roop mean nahian paya jata. yah dhatu gailena adi sisa ke khanijoan se prapt ki jati hai. isaki praptividhi b di saral hai. isi karan prachin kal se hi manushy isaka upayog karata a raha hai. pani le jane ke liye prachin kal mean bhi sisa ke nal upayog mean lae jate the. tin (vang) aur aiantimani dhatu ke sath sisa taip dhalane ka sarvottam padarth siddh hua hai. isake atirikt yah vidyuchchhanchayak baitariyoan, kebal (cable), yuddhasamagri arthath gola barood adi, varnish, davaiyaan, chhapaee, rangaee, aur rabar udyog mean bhi kam ata hai.
gun
yah sisa ka salphaid[1] hai, par isamean alp matra mean chaandi bhi vidyaman rahati hai. isake manibh ghan nikay (cubic system) ke hote haian. yah adhikatar ghanakar roop mean paya jata hai. isaka rang kala par dhatviy chamak lie hota hai. yah khanij tin dishaoan mean saralata se to da ja sakata hai. isaki kathorata 2.5 hoti hai tatha apekshik ghanatv 7.5.
prapti
prapti yah khanij talachhati shilaoan (sedimentary rocks) mean dhariyoan (veins) ke roop mean milata hai. choone ki shilaoan tatha dolomait shilaoan mean yah pun:sthapan kriya ke phalasvaroop sthapit ho jata hai.
mukhy utpadak
sanyukt rashtr amerika, meksiko, aaustreliya tatha kanada is khanij ke mukhy utpadak haian. bharat mean yah khanij rajasthan mean udayapur se lagabhag 30 mil door javar ki khadanoan se prapt hota hai. isake atirikt bihar, madhy pradesh tatha madras mean bhi is khanij ke nikshep haian.[2]
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tika tippani aur sandarbh
bahari k diyaan
sanbandhit lekh
varnamala kramanusar lekh khoj
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