Porphyry
Features
Processing
Quarries
   
   
   

Porphyry: name of an effusive and eruptive rock, acid, chymically correspondent to granites formed by quarts phenocrystals, ortoclasium and mica, anfibolo and piroxenum dipped in a compact quartzum feldspatic matrix with or without brown- reddish vitreous substance. Porphyry  is really hard, sawble with a really high imbibition coefficient.

 
 
 
 
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