کانی سازی و ارزیابی سیالات مادر در تشکیل کانسار فلوریت کوه سفید، شمال غربی تربت جام

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه فردوسی مشهد

2 دانشگاه فرهنگیان مشهد

3 مرکز زمین شناسی و اکتشافی آبادان

چکیده

ذخیره معدنی فلوریت کوه سفید، در نزدیکی روستای کوه سفید در 110 کیلومتری جنوب شرقی مشهد قرار دارد. واحد­های زمین­شناسی در برگیرنده منطقه مورد بررسی مربوط به سازند کشف­رود با سن ژوراسیک پیشین تا پسین است. گسل­هایی با امتداد شمال غرب- جنوب شرق و شمال شرق- جنوب غربی در این ناحیه دیده می­شوند. رگه­های فلوریت دارای روندهای متفاوت، با ضخامت 2 تا 5/2 متر و طول 50 متر هستند. محلول­های گرمابی با دمایی در گستره 181 و 125 درجه سانتیگراد و میانگین 152 درجه سانتیگراد در امتداد گسل­ها و درز و شکاف ­ها تشکیل ماده معدنی فلوریت را داده است. میزان شوری سیالات درگیر پایین و دامنه تغییرات آنها از 979/1 تا 37/8 درصد است و به طور میانگین، شوری 5% تا 6% را نشان می­دهند. با توجه به شواهد زمین­شناسی، سنگ­نگاری، کانی­سازی و دمای سیالات درگیر، فلوریت این منطقه از نوع گرمابی است   

کلیدواژه‌ها

عنوان مقاله [English]

Mineralization and fluid evolution during mineralization of Sefidkouh Fluorite deposit, north west of Torbate Jam

نویسندگان [English]

  • Pazhkhzade 1
  • Ebrahimi Nasrabadi 1
  • Vatanpour 2
  • Ghaemi 1
  • Darvishi Khatooni 3
1
2
3
چکیده [English]

KuhSefid Flourite deposit is located about 110 km south east of Mashhad. Geological units of the region related to Kashafroud Formation with Jurassic age. Most of fluorite mineralization can be seen along the faults with direction of north west-south east. Fluorite veins are differente in diameter of 2 to 2.5 m and length of 50 m. Hydrothermal solutions with maximum and minimum temperatures of 181⁰C and 125⁰C with the average temperature of 152⁰C in protraction of faults, cracks and fragments, have created mineral substance. Geological evidences, petrography, mineralization and homogeneous temperature of fluids inclusion, are the evidences that concluded the Fluorite mineralization as Epithermal.

کلیدواژه‌ها [English]

  • Fluorite
  • fluid Inclusion
  • Mineralization
  • Sefidkouh
  • Torbat jam

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مجله بلورشناسی و کانی شناسی ایران
دوره 26، شماره 1 - شماره پیاپی 69
فروردین 1397
صفحه 209-218

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سابقه مقاله

  • تاریخ دریافت: 24 بهمن 1395
  • تاریخ بازنگری: 08 تیر 1396
  • تاریخ پذیرش: 14 مرداد 1396

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