دوره 30، شماره 2 - ( 3-1401 )
جلد 30 شماره 2 صفحات 222-207 |
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Forouzesh, Bonyadi. Application of mineral chemistry to mineralization and alteration evaluation in Zn-Pb Angouran deposit, Zanjan. www.ijcm.ir 2022; 30 (2) :207-222
URL: http://ijcm.ir/article-1-1743-fa.html
URL: http://ijcm.ir/article-1-1743-fa.html
فروزش ارمغان، بنیادی زهرا. کاربرد شیمی کانی‌ها در بررسی کانه‌زایی و دگرسانی در کانسار روی-سرب انگوران، زنجان. مجله بلورشناسی و کانی شناسی ایران. 1401; 30 (2) :207-222
ارمغان فروزش1 
، زهرا بنیادی* 1
، زهرا بنیادی* 1
1- دانشگاه بین المللی امام خمینی (ره)
چکیده: (1044 مشاهده)
کانسار روی- سرب انگوران در 135 کیلومتری غرب شهر زنجان و در شمالغربی پهنه ساختاری سنندج- سیرجان واقع است. نتایج این پژوهش نشان‌دهنده رخداد دگرسانی دولومیتی در فرادیواره کربنات و تشکیل آنکریت در فرودیواره شیست است. میزبان اصلی کانه‌زایی سنگ کربناتی دگرگون‌شده است. دولومیت انگوران از نوع ثانویه و گرمابی است. تشکیل دولومیت ثانویه و ایجاد تخلخل فضای لازم برای جای‌گیری کانه‌های سولفیدی اسفالریت، گالن و پیریت را در سنگ میزبان کربناتی فراهم کرده است. نتایج نشان می‌دهد که اسفالریت انگوران غنی از آهن، کادمیوم و ژرمانیم بوده و گالن غنی از آنتیموان و نقره است. دمای تشکیل اسفالریت انگوران 170-190 درجه سانتیگراد بوده است. از مقایسه این ویژگی‌ها با سایر کانسارهای سرب و روی مشخص شد که کانسار انگوران بیشترین شباهت را به کانسارهای نوع دره می‌سی‌سی‌پی (MVT) داشته و شیمی کانی‌ها و دمای تشکیل آنها تفاوت اساسی با سایر انواع کانه‌زایی دارد.
واژه‌های کلیدی: دگرسانی، کانه‌زایی، اسفالریت، دولومیت، انگوران، زنجان.
فهرست منابع
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