La Minita

Overview

domal shape, 70 m thick, several smaller lenses at same stratigraphic level, associated barite and magnetite lenses laterally. Lens 600 m long, 6-70 m thick. Remobilized in upper part by limestone replacement. 3 types of ore: massive barite with sulfides, stringers of barite and sulfides, massive magnetite with sulfides. Zoned upper disseminated barite-jasper-Pb-Zn sulfides, intermediate barite-Ag-sulfosalts-Pb-Zn sulfides, lower barite-Pb-Zn-Cu sulfides-sulfosalts. Stockwork feeder zone beneath Vulcano orebody. Ore depleted.

Geological Context

Tectonic Setting: Bimodal-mafic in epicontinental arc

Resources & Operations

Production Start: 1981

Data Provenance

Source: USGS MRDS