felsapaar

felsapaar kristal (18×a21×a8.5 cm)
2005 mein felsapaar ka vaishvik utpaadan

felsapaar (Feldspar) shailanirmaanakaari khanijon ka sabse mahatvapoorn varg hai. sanghatan ki drushti se ye khanij potaishiym, sodiym, kailsiym, tatha beriym ke ailuminosiliket hain. dharati ke garbh ka lagbhag 60% bhaag felsapaar se bana hai. [1]

is varg ke mukhya khanij nimnalikhit hain, jinmein pratham ke kristal ekanataaksh tatha shesh ke trintaaksh hote hain:

naam -- raasaayanik yog
  • orthoklej -- (K Al Si3O8)
  • maaikrokleen -- (K Al Si3O8)
  • ailbaait -- (Na Al Si3O8)
  • ainaurthaait --- (Ca Al2 Si3O8)

ailbaait-ainaurthaait sanghatak ek khanij maala ka nirmaan karte hain, jise plaijiokles (plagioclase) maala kehte hain. is maala ke khanij hain : oligokles (oligoclase), aidejin (andesine) laibraadoraait (labrodorite) tatha baaitonaait (bytownite). in khanijon mein ailbaait aur ainaurthaait sanghatakon ki bhinn bhinn maatraaeain rahati hain, udaaharanaarth lebraidoraait khanij mein ailbaait sanghatak ki pratishat maatra 30 se 50 tatha ainaurthaait sanghatak ki pratishat maatra tadanusaar 70 se 50 tak ho sakti hai.

felsapaar khanij bhinn bhinn rangon mein milte hain. orthoklej saadhaaranat: safed ya gulaabi hota hai, maaikrokleen safed ya hara tatha plaijiokles safed ya bhoore rang ke hote hain tatha inapar dhaariyaaain padi rahati hain. inki chamak kaachopam ya moteesam hoti hai tatha inmein do dishaaon mein vidlan satah vidyamaan rahati hai. inki kathorata 6 se 6.5 tatha aapekshik ghanatv 2.6 se 2.8 tak hai.

felsapaar varg ke bhinn bhinn khanijon ki upasthiti par hi shailon ka vibhaajan kiya jaata hai. kvaartj orthoklej, ailbaaitayukt shailein amleeya tatha ainaurthaait yukt shilaaeain kshaareeya shailein kahalaati hain. orthoklej, maaikrokleen aur ailbaait ke bahut se aarthik upayog bhi hain. inke sampoorn utpaadan ki do tihaai maatra kaach tatha cheeni mitti ke udyogon mein kaam aati hai. uchch shreni ka potaash felsapaar vidyut-avarodhi padaarth tatha banaavati daaaint banaane ke kaam aata hai.

yadyapi felsapaar sabhi shailon ke vidyamaan rahate hain, tathaapi inke aarthik mahatva ke nikshep paigamaitaait shailon tatha dhaariyon mein milte hain.

sandarbh

  1. Feldspar. What is Feldspar? Industrial Minerals Association. Retrieved on July 18, 2007