Accueil >                  	Term: perthorite  
perthorite
A deep-seated igneous rock consisting of alkali feldspar with less than 3% dark minerals. Feldspar, both orthoclase and albite, may be perthitically intergrown as cryptoperthite or as anorthoclase.
- Partie du discours : noun
 - Secteur d’activité/Domaine : Mines
 - Catégorie : Exploitation minière; Mineral mining
 - Government Agency: USBM
 
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 Créateur
- ed.young
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(Milwaukee, United States)