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هوشنگ پورکاسب علیرضا زراسوندی زهرا فریدونی بابک مختاری ندا میرزایی

چکیده

کانسار فسفات کوه‌سفید در کمربند زاگرس چین‌خورده ساده در شمال‌شرق استان خوزستان، شهرستان رامهرمز واقع است. سازند پابده با سه بخش بالایی (کانه‌زایی فسفات)، میانی (کانی‌های اکسیدی) و شیل‌‌های زیرین (مواد آلی همراه کانه‌زایی) میزبان کانه‌زایی است. هدف این پژوهش، بررسی انواع ترکیبات آلی همراه کانه‌زایی فسفات است. بنابراین 12 نمونه از واحد‌های فسفاته و شیلی برای بررسی‌های کانی‌شناسی، XRD، FTIR و راک ایول برداشت شد. بررسی مقاطع میکروسکپی نشان داد که اجزای فسفاته شامل پلت، اائید، اینتراکلاست، خرده استخوان و میکروفسیل‌هاست. بررسی‌های XRD و FTIRباند‌های معدنی– آلی مانند OH، OH کربوکسیلیک، C=O اسید‌های کربوکسیلیک، C≡Cآلکین، گروه CH2، C=Cآروﻣﺎﺗﯿﮏ، CHآروﻣﺎﺗﯿﮏ و آلیفاتیک همراه کانه‌زایی را مشخص کردند. کربن‌‌های آلی و قاره‌ای نیز توسط پیرولیز راک ایول تعیین شدند که نشان داد، کانه‌زایی اغلب منشأ قاره‌ای دارد و بخشی نیز حاصل تخریب مواد آلی توسط میکروارگانیسم‌هاست.

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ارجاع به مقاله
پورکاسب ه., زراسوندی ع., فریدونی ز., مختاری ب., & میرزایی ن. (2017). بررسی انواع ترکیبات آلی و نقش آنها در ته‌ نشینی و کانه‌ زایی فسفات در کانسار فسفات کوه‌ سفید، رامهرمز. زمین‌شناسی اقتصادی, 9(1), 159-174. https://doi.org/10.22067/econg.v9i1.49329
نوع مقاله
علمی- پژوهشی