The Chiatura deposit is considered to be among the largest deposits of metallurgical grade manganese ore in the world, yet its geochemistry is poorly known, which is the focus of this …
Almost all economic manganese ores are ultimately or directly derived from hydrothermal vents associated with intermediate volcanic rocks. This source is in contrast to deep-sea …
Two∼ 6 m long sediment cores were collected along the∼ 300 m isobath on the Alaskan Beaufort Sea continental margin. Both cores showed distinct sulfate-methane transition …
JR Hein, MS Schulz, RE Dunham… - Journal of …, 2008 - Wiley Online Library
Abundant ferromanganese oxides were collected along 1200 km of the active Izu‐Bonin‐ Mariana arc system. Chemical compositions and mineralogy show that samples were …
Mineral compounds, as pigments and therapeutics, appeared regularly in the technical and medical texts of the Greco-Roman (GR) world. We have referred to them as 'GR medicinal …
Boiling is a crucial process triggering ore formation in magmatic-hydrothermal systems and controlling the enrichment of precious and rare metal (loid) s in epithermal-porphyry …
This study summarizes a compilation of studies and cartographical work on seabed mineral deposit types in pan-European seas developed under the GeoERA-MINDeSEA project. In …
R Jach, T Dudek - Chemical Geology, 2005 - Elsevier
A Mn-bearing sequence of the Krížna unit in the Western Tatra Mountains occurs locally between shallow-water crinoidal tempestites (Lower Toarcian) and pelagic red nodular …