سامانه مدیریت نشریات علمی دانشگاه دامغان

رستم‌پور مقدم بگلر, حسین, ملکزاده شفارودی, آزاده, سعادت, سعید. (1404). شواهد کانی‌سازی مس-طلای پورفیری در منطقه اکتشافی زرد کوه، جنوب‌شرق ایرانشهر. مجله زمین شیمی ایران, 30(4), 697-712. doi: 10.52547/ijcm.30.4.697
حسین رستم‌پور مقدم بگلر; آزاده ملکزاده شفارودی; سعید سعادت. "شواهد کانی‌سازی مس-طلای پورفیری در منطقه اکتشافی زرد کوه، جنوب‌شرق ایرانشهر". مجله زمین شیمی ایران, 30, 4, 1404, 697-712. doi: 10.52547/ijcm.30.4.697
رستم‌پور مقدم بگلر, حسین, ملکزاده شفارودی, آزاده, سعادت, سعید. (1404). 'شواهد کانی‌سازی مس-طلای پورفیری در منطقه اکتشافی زرد کوه، جنوب‌شرق ایرانشهر', مجله زمین شیمی ایران, 30(4), pp. 697-712. doi: 10.52547/ijcm.30.4.697
رستم‌پور مقدم بگلر, حسین, ملکزاده شفارودی, آزاده, سعادت, سعید. شواهد کانی‌سازی مس-طلای پورفیری در منطقه اکتشافی زرد کوه، جنوب‌شرق ایرانشهر. مجله زمین شیمی ایران, 1404; 30(4): 697-712. doi: 10.52547/ijcm.30.4.697

شواهد کانی‌سازی مس-طلای پورفیری در منطقه اکتشافی زرد کوه، جنوب‌شرق ایرانشهر

مجله بلورشناسی و کانی شناسی ایران
مقاله 9، دوره 30، شماره 4 - شماره پیاپی 90، دی 1401، صفحه 697-712    اصل مقاله (4.16 M)
شناسه دیجیتال (DOI): 10.52547/ijcm.30.4.697
نویسندگان
حسین رستم‌پور مقدم بگلر1؛ آزاده ملکزاده شفارودی* 1؛ سعید سعادت2
1دانشگاه فردوسی مشهد
2دانشگاه آزاد اسلامی
چکیده
منطقه اکتشافی زردکوه در استان سیستان و بلوچستان و در جنوب­شرق ایرانشهر قراردارد. این منطقه در مرز حوضه پیش­کمانی مکران با پهنه فلیش شرق ایران واقع است. زمین­شناسی منطقه بیشتر شامل سنگ­های آتشفشانی-رسوبی کرتاسه پسین بوده که توده پیروکسن­دیوریتی تا مونزودیوریتی در آن­ها نفوذ کرده است. توده دیوریتی دربردارنده رگچه­های کوارتز- سولفید فراوان با سیمای به شدت دگرسان شده است. کانی­سازی در این منطقه بیشتر همراه با دگرسانی­های سیلیسی و آرژیلیک همراه با پهنه گسترده گوسان دیده می­شود که با دگرسانی پروپلیتیک دربرگرفته شده­است. کانی­های اولیه پیریت و کالکوپیریت و کانی­های ثانویه شامل گوتیت، هماتیت، لیمونیت، ژاروسیت، کالکوسیت، کوولیت، مالاکیت و آزوریت هستند که در قالب بافت رگچه­ای، افشان، گل کلمی و جانشینی دیده می­شود. بیشترین مقدار طلا 1/1 گرم بر تن، مس 5 درصد، نقره 4 گرم در تن، آرسنیک بیش از 100 گرم برتن و روی 759 گرم برتن اندازه­گیری شده است. بررسی سیال­های درگیر در کانی کوارتز نشان می­دهد که دمای همگن­شدگی سیال­های درگیر بین 188 تا 365 درجه­ی سانتی­گراد و مقدار شوری از 5/14 تا 2/18 درصد وزنی متغیر است. داده­های دما و شوری نقش فرآیند آمیختگی سیال با دما و شوری بالا به (احتمال بسیار ماگمایی) را با سیال­های جوی با دما و شوری پایین­تر را در تشکیل ذخیره معدنی نشان می­دهد. نوع دگرسانی و گسترش آن، بی­هنجاری­های زمین شیمیایی، گستره دما و شوری، موقعیت زمین­شناسی، سنگ­شناسی و کانی­شناسی نشان می­دهد که کانی­سازی منطقه اکتشافی زردکوه می­تواند نشانگر بخش پسین یک سامانه از نوع مس- طلا پورفیری باشد.    
کلیدواژه‌ها
کانی‌سازی؛ زمین شیمی؛ سیال‌های ‌درگیر؛ مس- طلا؛ پورفیری؛ زردکوه؛ ایرانشهر
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