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14/04/2020· در کانادا طلا از کانیهای نیکل و در آفریقای جنوبی از کانیهای پلاتین بازیابی میشود. در سراسر جهان کانیهای طلا و کانسارهای آبرفتی، محصولات فرعی ارزشمندی را فراهم میآورند. بهعنوانمثال میتوان به چندین معدن طلای مهم آفریقای جنوبی اشاره کرد که در آنها فلز اورانیوم بهعنوان محصول فرعی در کنار طلا تولید میشود.
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یک پیام ارسال کرد