有作用
发表于 2025-3-21 19:14:50
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Cholesterol
发表于 2025-3-22 00:16:26
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战胜
发表于 2025-3-22 02:30:09
Introduction,conomic interest in a deposit are referred to as . and the waste material as .. Accessory sulfide-group and oxide-group minerals (e.g., pyrite, arsenopyrite, magnetite, ilmenite), especially in metallic mineral deposits, however, are sometimes described as ore minerals, although they actually constitute part of the gangue.
背带
发表于 2025-3-22 07:56:38
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旁观者
发表于 2025-3-22 10:21:44
Mississippi Valley-Type (MVT) Zinc-Lead Deposits,s contain a substantial proportion of the world’s reserves of zinc and lead. They are the main source of these metals in the United States and contribute significantly to the production of lead and zinc in Canada and Europe.
Ibd810
发表于 2025-3-22 15:52:09
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meretricious
发表于 2025-3-22 20:35:31
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字形刻痕
发表于 2025-3-23 00:31:04
Formation of Mineral Deposits,parts per million (Table 2.1). The formation of a mineral deposit represents the convergence of a set of favorable circumstances leading to a significantly higher concentration of one or more elements in a limited portion of the Earth’s crust. The required ., which is defined as the ratio of the ave
举止粗野的人
发表于 2025-3-23 04:58:52
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Armory
发表于 2025-3-23 06:34:13
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