Category Archives: Bacteria

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

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

Bacteria, Oxygen, and Gold!

New research published in Economic Geology by Tomkins provides insight into the importance of atmospheric evolution and bacteria in controlling the distribution of orogenic gold deposits (and resources) during the planet’s history. Orogenic (mesothermal) gold deposits form from gold-bearing fluids that are … Continue reading

Posted in Bacteria, Biogeochemistry, Economic Geology, Geochemistry, Geology, Gold, Gold Deposits, Mineral Resources, Orogenesis, Tectonics | Leave a comment