File:Mineralogy and Distribution of Critical Elements in the Sn–W–Pb–Ag–Zn Huanuni Deposit, Bolivia - Figure 4.png

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English: Figure 4. Photomicrographs of Zn-rich base metal associations in the Huanuni deposit. (A) Chalcopyrite disease textures in sphalerite that replace earlier pyrite in the Bonanza area; RPPL. (B) Stage-2 base metal sulphides with exsolved černýite from sphalerite in the La Suerte area; back-scattered electron (BSE) image. (C) Stage-2 base metal sulphides in the Bonanza area; notice the passive precipitation of sphalerite after pyrite; BSE image. (D) Stage-2 base metal sulphides in association with phyllic-alteration minerals in the La Suerte area; notice the reactive precipitation of sphalerite after pyrite and the occurrence of apatite; BSE image. (E) Stage-2 rutile associated with quartz and wurtzite in the La Suerte area; BSE image. (F) Stage-2 base metal-rich association with sphalerite partly replaced by chalcopyrite, cassiterite, and stage-3 stannite rimming potassium feldspar (potassic assemblage) in the Central area; BSE image.
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Source Cacho A, Melgarejo J-C, Camprubí A, Torró L, Castillo-Oliver M, Torres B, Artiaga D, Tauler E, Martínez Á, Campeny M, Alfonso P, Arce-Burgoa OR. Mineralogy and Distribution of Critical Elements in the Sn–W–Pb–Ag–Zn Huanuni Deposit, Bolivia. Minerals. 2019; 9(12):753.
https://www.mdpi.com/2075-163X/9/12/753/htm
Author Andreu Cacho, Joan-Carles Melgarejo, Antoni Camprubí, Lisard Torró, Montgarri Castillo-Oliver, Belén Torres, David Artiaga, Esperança Tauler, Álvaro Martínez, Marc Campeny, Pura Alfonso i Osvaldo R. Arce-Burgoa
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