Tag Archives: Hydrothermal vent

Classic papers in Economic Geology: Fallick et al. (2001) – Bacteria were responsible for the magnitude of the world-class hydrothermal base metal base metal sulfide deposit at Navan, Ireland

Posted on April 30, 2013 by stevepiercey

Irish-type zinc-lead deposits represent a distinctive sub-class of the carbonate-hosted zinc-lead deposit family, having geological features and genetic models that are hybrids between sedimentary exhalative (SEDEX; also known as clastic zinc-lead deposits) and Mississippi Valley-type (MVT) deposits.  They are important … Continue reading →

Posted in Bacteria, Biogeochemistry, Carbonate-hosted deposits, Classic Papers, Economic Geology, Geochemistry, Geology, Geophysics, Ireland, Irish-type deposits, Lead, Mineral Resources, Seafloor, Seafloor Massive Sulfides, Sedimentary exhalative deposits, Sedimentology, Stable Isotopes, Zinc | Tagged , , , , , , , , , , , , , | Leave a comment

The origin of banding in banded iron formations (BIF)

Posted on April 16, 2013 by stevepiercey

Banded iron formations (BIF) and iron ore are globally important resources of iron that have very distinctive textures.  Well-preserved BIF contain iron-rich bands consisting of iron oxides (e.g., hematite, magnetite), iron silicates (e.g., stilpnomelane), and iron oxyhydroxides (e.g., greenalite), that … Continue reading →

Posted in Banded Iron Formations, Economic Geology, Geology, Iron Ore, Mineral Resources, Submarine Volcanism | Tagged , , , , , , , | 2 Comments