کانی‌شناسی، زمین‌شیمی و بررسی سیال‌های درگیر مربوط به سامانه کانه‌زایی مس رگه‌ای در منطقه سماخون، شمال‌غرب تربت جام

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه زمین‌شناسی، دانشکده علوم، دانشگاه فردوسی مشهد، مشهد، ایران

2 گروه زمین‌شناسی و گروه پژوهشی اکتشاف ذخایر معدنی شرق ایران، دانشکده علوم، دانشگاه فردوسی مشهد، مشهد، ایران

3 گروه معدن، دانشکده فنی و مهندسی، دانشگاه کردستان، سنندج، ایران.

چکیده

منطقه اکتشافی سماخون در استان خراسان رضوی و در شمال غربی تربت جام قرار دارد. واحدهای سنگی منطقه شامل
سنگ­های آتشفشانی، رسوبی و گرانیتوئیدهای نیمه عمیق هستند. یک نوع از کانه­زایی­های موجود در منطقه، کانی­سازی رگه-رگچه­ای است که در واحد توف آندزیتی تا بازالتی و مرز آن با آهک رخنمون دارد. کانی­های اولیه کالکوپیریت، پیریت و بورنیت  هستند و کانی­سازی ثانویه شامل مالاکیت، کالکوسیت، کوولیت، هماتیت، گوتیت و آزوریت است. مهمترین کانی باطله همراه با کانی­سازی، کانی کوارتز است که به صورت پرکننده فضاهای خالی و رگچه­ای دیده می­شود. کانی­سازی دارای بی­هنجاری مس با مقدار 5/4 درصد است و سایر عناصر ارزش اقتصادی ندارند. پایه بررسی سیال های درگیر در کانی کوارتز، دمای تشکیل کانی­سازی 178 تا 345 درجه سانتی­گراد و شوری 7/13 تا 6/20 درصد است. براساس شواهد زمین­شناسی و کانه­زایی، تشکیل یکی از کانی­سازی­های منطقه سماخون نشانگر کانسارهای مس رگه­ای گرمابی است.

کلیدواژه‌ها

عنوان مقاله [English]

Mineralogy, geochemistry, and fluid inclusion studies related to Cu vein mineralization in Samakhon prospect area, NW of Torbat-e-Jam

نویسندگان [English]

  • Borouziniyat 1
  • Malekzadeh Shafaroudi 2
  • Azizi 3
  • Karimpour 2
  • Rahimi 2
1 Department of geology, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
2 Research Center for Ore Deposit of Eastern Iran, Ferdowsi University of Mashhad, Mashhad, Iran
3 Department of Mining, Technical and Engineering Faculty, University of Kurdistan, Sanandaj, Iran.
چکیده [English]

Samakhon prospect area is located NW of Torbat-e-Jam in Khorasan Razavi Province. Lithology of the area includes volcanic, sedimentary and subvolcanic granitoids rocks. One type of mineralization identified in this area is vein-veinlet that hosted by basaltic to andesitic tuff in contact with limestone. Primary minerals are chalcopyrite, pyrite, and bornite and secondary minerals includes malachite, chalcocite, covellite, hematite, goethite and azurite. The most important gangue mineral with mineralization is quartz that is observed as filling open space and veinlet. Mineralization has anomaly of Cu (4.5 %) and other elements have no economic value. Based on fluid inclusion studies in quartz mineral, temperature during the formation of mineralization is 178 to 345ºC with 13.7 to 20.6 wt. % salinity. According to the geological and mineralization evidence, mineralization zones in the Samakhon area represent the Cu hydrothermal vein-type deposits.

کلیدواژه‌ها [English]

  • Vein mineralization
  • fluid Inclusion
  • Geochemistry
  • Samakhon
  • Torbat-e-Jam

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سابقه مقاله

  • تاریخ دریافت: 02 اسفند 1402
  • تاریخ بازنگری: 17 فروردین 1403
  • تاریخ پذیرش: 01 اردیبهشت 1403

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