Distribución y caracterización del oro libre y refractario presente en los ftlones de cuarzo-arsenopirita de las minas de Penedela, Fornaza y Río de Porcos (Límite entre Lugo y Asturias)

1. L. Villa ¹
2. D. Arias ¹
3. O. Suárez ¹
4. L. G. Corretge ¹

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Outras publicacións en: Cadernos do Laboratorio Xeolóxico de Laxe: Revista de xeoloxía galega e do hercínico peninsular

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The gold veins of the Ibias zone (limit between the provinces of Lugo and Asturias), contain free and refractory gold. Free gold appears as electrum (66 % Au and 32 % Ag) along with quartz filling microfractures in pyrite and arsenopyrite. The refractory gold is present in the crystal lattice of the sulphides, with contents of 456 gr/t Au in arsenopyrite and 386 gr/t Au in pyrite. The metalurgical results show a 68,3 % of gold recovery, in correlation with the chemical and mineralogical study.

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