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Relationship between the Porco, Bolivia, Ag-Zn-Pb-Sn deposit and the Porco Caldera

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Relationship between the Porco, Bolivia, Ag-Zn-Pb-Sn deposit and the Porco Caldera; 1994; Article; Journal; Economic Geology; Cunningham, C. G.

Summary

The Porco Ag-Zn-Pb-Sn deposit, a major Ag producer in the 16th century and currently the major Zn producer in Bolivia, consists of a swarm of fissure-filling veins in the newly recognized Porco caldera. The caldera measures 5 km by 3 km and formed in response to the eruption of the 12 Ma crystal-rich dacitic Porco Tuff. The mineralization is associated with, and is probably genetically related to, the 8.6 Ma Huayna Porco stock. The Porco deposit consists of steeply dipping irregular and curvilinear veins that cut the intracaldera Porco Tuff about 1 km east of the Huayna Porco stock. Most of the veins are aligned along the structural margin (ring fracture) of the caldera. The ore deposit is zoned around the Huayna Porco stock. The primary [...]

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C.G. Cunningham

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Type Scheme Key
local-index unknown 70017381
local-pk unknown 70017381
series unknown Economic Geology

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journalEconomic Geology
parts
typevolume
value89
typeissue
value8
languageEnglish
citationTypeArticle

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