Writers : Akbarpour Mottaghi,Ehsan;Mehdizadeh Shahri, Hossein; Fazel Valipour,Mohammad Ebrahim
Refference : The first international applied geological congress; Department of geology Islamic azad university- Mashhad
Publishing Year : 2010

Abstract :

The acidic mass from granodurite to tonalite material is at 17 km west-north Mashhad at Binalood Structural zone that has penetrated in the ophiolite series and zone regional metamorphic rocks and it has resulted a contact aureole at its around at pyroxen - horenfels facies limit. The microscopic and chemical evidences indicate the existence of alunite mineral in these masses.
This mineral which belongs to aluminum sulfate minerals group indicating that these masses have a type S and have been emerged from upper Crust rocks.
The chemical analysis from a Region masses indicates that these masses belong to per-alumina group and have emerged with a combination of Calc - Alkaline at continental collision zone.

Subject List : Granitoeid