The studied copper ore deposit is located in Miedzianka Mountain (Świętokrzyskie Mountains, central Poland). This was exploited from the 13th century to 1950s; therefore numerous historical adits are currently present. One of these Teresa adit (established 1805), consisting underground mining corridors and natural cave developed Upper Devonian limestones, partially transformed by works. Samples...

This review describes the historical development and current state of metals leaching and sulfide mineral biooxidation by the minerals industries. During the past 20 years commercial processes employing microorganisms for mineral recovery have progressed from rather uncontrolled copper dump leaching to mineral oxidation and leaching in designed bioheaps for oxidation of refractory gold ores and...

We present a study of order-disorder phenomena in the series of tetrahedral ordered vacancy compounds Zn1-xMnxGa2Se4 by means of time-of-flight neutron diffraction at high temperature together with dc magnetic susceptibility, Raman spectroscopy, differential thermal analysis and optical absorption experiments. Samples of nominal composition x = 0, 0.24, 0.5, 0.77 and 1 have been studied. An ord...

Abstract Chalcopyrite II-IV-V 2 semiconductors are promising materials in nonlinear optical, optoelectronic, and photovoltaic applications. In this work, pressure-tailored optical properties as well pressure-driven emergent superconductivity chalcopyrite ZnSiP reported via photoluminescence (PL) spectroscopy electrical transport experiments. During compression, the PL peak energy exhibits a pla...

This paper reports on a study of column bioleaching low-grade chalcopyrite ore that is currently dump-leached under natural biological conditions without any control over microbial populations. The experimental methodology was focused the effect managing bacterial populations in raffinate solution sourced from dump-leach operation. presents results columns two heights (0.45 and 1.0 m). We demon...