Stability of biological and inorganic hemimorphite: implications for hemimorphite precipitation in non-sulfide Zn deposits

D Medas, F Podda, C Meneghini, G De Giudici - Ore Geology Reviews, 2017 - Elsevier
Abstract Hemimorphite, Zn 4 Si 2 O 7 (OH) 2· H 2 O, one of the most common minerals in
non-sulfide Zn deposits, together with smithsonite and hydrozincite, is one of the most …

Biochar and Eisenia fetida (Savigny) promote sorghum growth and the immobilization of potentially toxic elements in contaminated soils

M Garau, G Garau, T Sizmur, S Coole, P Castaldi… - Applied Soil …, 2023 - Elsevier
Biochar is a soil amendment capable of influencing plant growth and potentially toxic
elements (PTEs) bioavailability in soils. At the same time Eisenia fetida (Savigny) is able to …

Molybdenum and zinc stable isotope variation in mining waste rock drainage and waste rock at the Antamina mine, Peru

EK Skierszkan, KU Mayer, D Weis… - Science of the Total …, 2016 - Elsevier
The stable isotope composition of molybdenum (Mo) and zinc (Zn) in mine wastes at the
Antamina Copper–Zn–Mo mine, Peru, was characterized to investigate whether isotopic …

Impact of Eisenia fetida earthworms and biochar on potentially toxic element mobility and health of a contaminated soil

M Garau, T Sizmur, S Coole, P Castaldi… - Science of the Total …, 2022 - Elsevier
This study aimed to evaluate the influence of Eisenia fetida (Savigny), added to an acidic
soil contaminated with potentially toxic elements (PTEs; As, Sb, Cd, Pb, Zn) and amended …

Quantifying biomineralization of zinc in the Rio Naracauli (Sardinia, Italy), using a tracer injection and synoptic sampling

G De Giudici, RB Wanty, F Podda, BA Kimball… - Chemical …, 2014 - Elsevier
Streams draining mined areas throughout the world commonly have high concentrations of
Zn. Because Zn is not easily removed from stream water and because it can be toxic to …

Zn biomineralization processes and microbial biofilm in a metal-rich stream (Naracauli, Sardinia)

F Podda, D Medas, G De Giudici, P Ryszka… - … science and pollution …, 2014 - Springer
Several decades after the closure of the Ingurtosu mine (SW Sardinia), a variety of seasonal
Zn biomineralizations occurs. In this work, waters, microbial consortia, and seasonal …

[HTML][HTML] Tracing acid mine drainage and estuarine Zn attenuation using Cd and Zn isotopes

H Packman, SH Little, JM Nieto, MD Basallote… - … et Cosmochimica Acta, 2023 - Elsevier
It has been estimated that the acid mine drainage (AMD) impacted Odiel river basin in
southern Spain supplies 0.37% and 15% of the global riverine fluxes of Cd and Zn to the …

Application of hydrologic-tracer techniques to the Casargiu adit and Rio Irvi (SW-Sardinia, Italy): Using enhanced natural attenuation to reduce extreme metal loads

G De Giudici, D Medas, R Cidu, P Lattanzi, F Podda… - Applied …, 2018 - Elsevier
Hydrologic tracer techniques were applied to Rio Irvi (SW Sardinia), a stream affected by
mine drainage, allowing the calculation of stream discharge and metal loads and …

Structure of low-order hemimorphite produced in a Zn-rich environment by cyanobacterium Leptolingbya frigida

D Medas, C Meneghini, F Podda, C Floris… - American …, 2018 - degruyter.com
Microbes play a fundamental role in the precipitation of silicate biominerals, thereby
affecting the Si geochemical cycle. The fine mechanisms ruling biomineralization are not yet …

Biominerals and Their Role in the Present and Future of Legacy Mining

P Onnis, D Medas, E Dore, D Fancello, F Podda… - Geomicrobiology …, 2024 - Springer
Understanding the resilience of microorganisms to extreme environments and geo-bio
interactions contributes to the worldwide challenge posed by abandoned mining wastes …