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The source of metals and gangue elements in epigenetic deposits

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Abstract

The metals, gangue elements, and volatiles in epigenetic deposits probably came from the country rocks that enclose, lie below, or lie lateral to the deposits. From their sites in the country rocks the elements were mobilized during metamorphism or were collected by deep seated circulating ground waters or brines. Most elements probably migrate by diffusion and are concentrated by the action of dilatant structures or as a result of chemical reaction with favourable rocks such as limestones.

Résumé

Les métaux, les éléments constitutifs de la gangue et la fraction volatile des gisements (métallifères) épigénétiques proviennent probablement des roches encaissantes, sous-jacentes ou contigües. Ces élément appartenant aux roches environnantes ont été mobilisés, lors d'un métamorphisme ou ont été captés par des eaux souterraines circulant à grandes profondeurs ou par des eaux saumâtres. La plupart des éléments se sont probablement déplacés par diffusion et, ensuite, ont été concentrés dans des structures dilatantes ou par des réactions chimiques avec des roches réceptives tels que des calciares.

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Boyle, R.W. The source of metals and gangue elements in epigenetic deposits. Mineral. Deposita 3, 174–177 (1968). https://doi.org/10.1007/BF00207105

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  • DOI: https://doi.org/10.1007/BF00207105

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