ग्रेनाइट  हिन्दी देवनागरी में पढ़ें।

grenait (angrezi: Granite) ek prakar ki manibhiy danedar shila hai. isake pramukh avayav sphatik[1] aur phelspar[2] hain. grenait prithvi ke pratyek bhag men paya jata hai. bharat men bhi yah prachurata se milata hai. maisoor, uttar arkat, madras, rajapootana, salem, bundelakhnd aur sinhabhoomi men yah paryapt matra men prapt hota hai. himalay pradeshon men bhi grenait shilaen vidyaman hain.

avayav

'grenait' shabd ka sarvapratham upayog prachin italiyan sngrahakartaon ne kiya tha. rom ke shilpakar phleminiyas veka ke ek varnan men isaka pratham sndarbh milata hai. sadharanat: grenait manibhiy danedar shila hai, jisake pramukh avayav 'sphatik' aur 'phelspar' hain. phelspar sadharanat: potash kism ka aaurthokles aur maikroklain[3] hoti hai, athava sodiyam kism ka plaigiokles[4] ailbait[5] ya auligokles.[6] sphatik sadharanat: varn rahit roop men hi rahata hai, par kabhi-kabhi kuchh nili abha rahati hai, jisase grenait ka rng kuchh nilapan lie hota hai. isamen abhrak, maskovait[7] aur bayotait[8] bhi alp matra men rahate hain.[9]

maignitait[10], aipaitait[11], jarakan[12] tatha sphin[13] bhi bade sookshm manibhon ke roop men grenait men rahate hain. kisi kisi namoone men haaurnablend [14], garnet[15] aur turamali[16] bhi pae ge hain. in khanijon ki upasthiti ke karan aise grenaiton ko kramash: haurnablend grenait, maskavait grenait aur bayotait grenait bhi kahate hain.

rng

grenait anek rngon ka paya jata hai. potash grenait gulabi ya lal rng ka hota hai tath choona grenait dhoosar ya shvet rng ka. grenait ka vishisht ghanatv 2.51 se 2.73 tak hota hai.

udbhav

isake ke udbhav ke snbndh men vaigyanik ekamat nahin hain. kuchh vaigyanikon ka mat hai ki isaka udbhav drav pattharon ya 'maigma'[17] ke dhire-dhire thndha hokar thos banane se hua hai. inamen se kuchh isaka nirman grenait maigma se aur kuchh baisaltiy maigma se manate hain. kuchh vaigyanikon ka yah vichar hai ki poorvasthit shilaon ke grenait banane vale nirgamon[18] ki pravaran [19] kriya se, athava grenait banane vale abhikarmakon dvara, jinako sederahom[20] ne ayakari nam diya hai, grenait bane hain.


panne ki pragati avastha
adhar
prarambhik
madhyamik
poornata
shodh

tika tippani aur sndarbh

  1. quartz
  2. feldspar
  3. Orthoclase and Microline
  4. Plagioclase
  5. Albite
  6. Oligoclase
  7. Muscovite
  8. Biotite
  9. grenait (hindi) bharatakhoj. abhigaman tithi: 08 agast, 2014.
  10. Magnetite
  11. Apatite
  12. Zircon
  13. Sphene
  14. Hornblende
  15. Garnet
  16. Tourmaline
  17. Magma, lava
  18. emanations
  19. selective
  20. Sederholmn

snbndhit lekh

varnamala kramanusar lekh khoj

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