Writers : Shiayan,Keyvan;Ameri,Ali
Refference : The 15th Symposium of Crysallography and Mineralogy of Iran
Publishing Year : 1387

Abstract :

Mineralogy studies in north-east sabzevar area show three kind of lava flows in ophiolite. Splitites contain albite, augite, hornoblande and have prophyry, aphyric, senate extures Keratophyres contain albite, quartz, epidote, augite minerals and have glomero porphyry , aphric , trachyte textures Dacite lara contain plagioclase, quartz, occasional augite phenocrysts into the glass matrix For example we choosed four sample and determained norm mineral and some chemical index and identified magnetic series according methode that is used by niggli and burn. These studies improve magnetic differentiation and sub - sea – floor metamorphism in lava flows. Ignimbritic dacite lava shows erouption of lava that sent out from an arc in the without water enviorment.

Subject List : Ophiolite, mineralography