دوره 32، شماره 1 - ( 1-1403 )
جلد 32 شماره 1 صفحات 144-127 |
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Darvishi E, Shahrokhi S. Mineral geochemistry and mineralogy of Masteroon pegmatite (North of Aligudarz - Lorestan Province). www.ijcm.ir 2024; 32 (1) :127-144
URL: http://ijcm.ir/article-1-1848-fa.html
URL: http://ijcm.ir/article-1-1848-fa.html
درویشی اسماعیل، شاهرخی سیدوحید. کانی شیمی و کانی‌شناسی در پگماتیت مسترون (شمال الیگودرز- استان لرستان). مجله بلورشناسی و کانی شناسی ایران. 1403; 32 (1) :127-144
اسماعیل درویشی1 
، سیدوحید شاهرخی* 2
، سیدوحید شاهرخی* 2
1- گروه زمین‌شناسی، واحد الیگودرز، دانشگاه آزاد اسلامی، الیگودرز، ایران
2- گروه زمین‌شناسی، واحد خرم‌آباد، دانشگاه آزاد اسلامی، خرم‌آباد، ایران
2- گروه زمین‌شناسی، واحد خرم‌آباد، دانشگاه آزاد اسلامی، خرم‌آباد، ایران
چکیده: (703 مشاهده)
منطقه مسترون در شمال‌شرق شهر ازنا و در پهنه سنندج-سیرجان قرار دارد. واحدهای سنگی موجود شامل توالی به نسبت یکنواخت اسلیت و فیلیت همراه با توده نفوذی گرانودیوریتی دربرگیرنده مجموعه پگماتیتی هستند. مهم‌ترین کانی‌ها کوارتز، فلدسپار قلیایی، پلاژیوکلاز، تورمالین و موسکویت هستند. کوارتز با خلوص بالا و بدون عناصر جانبی است. تجزیه به روش ریزپردازش الکترونی نشان‌دهنده حضور فلدسپار از نوع آلبیت و به مقدار کمتر از نوع ارتوز با دمای تبلور کمتر از ºC550 است. این امر می‌تواند ناشی از دگرگونیهای زیر نقطه انجماد ترکیب فلدسپارها طی سرد شدن توده باشد. تورمالین‌های موجود از نوع شورل و قلیایی با کمبود در جایگاه X هستند و حضور فراوان، خودشکلی و نبود منطقهبندی شیمیایی بیانگر ماگمایی بودن آنهاست. موسکویت‌ها به دو صورت دانه درشت در پگماتیت‌ها و دانه ریز در درزه‌ها و شکاف‌ها حضور دارند که موسکویت‌های دانه درشت به سمت قطب فنژیت کشش ندارند.
فهرست منابع
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