enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Polymetallic ore - Wikipedia

    en.wikipedia.org/wiki/Polymetallic_ore

    The term "polymetallic ore" also includes nodules, principally Manganese nodules, that do not form as terrestrial deposits but as concretions on the ocean floor. [ 3 ] [ 4 ] Rocks containing polymetallic ores are often altered or formed by hydrothermal processes — chloritization , sericitization and silicification .

  3. Sedimentary exhalative deposits - Wikipedia

    en.wikipedia.org/wiki/Sedimentary_exhalative...

    Main ore minerals in SEDEX deposits are fine-grained sphalerite and galena, chalcopyrite is significant in some deposits; silver-bearing sulfosalts are frequent minor constituents; pyrite is always present and can be a minor component or the dominant sulfide, as it is the case in massive sulfide bodies; barite content is common to absent ...

  4. Evaporite - Wikipedia

    en.wikipedia.org/wiki/Evaporite

    A cobble encrusted with halite evaporated from the Dead Sea, Israel (with Israeli ₪1 coin [diameter 18mm] for scale). An evaporite (/ ɪ ˈ v æ p ə ˌ r aɪ t /) is a water-soluble sedimentary mineral deposit that results from concentration and crystallization by evaporation from an aqueous solution. [1]

  5. Pyrite - Wikipedia

    en.wikipedia.org/wiki/Pyrite

    A newer commercial use for pyrite is as the cathode material in Energizer brand non-rechargeable lithium metal batteries. [20] Pyrite is a semiconductor material with a band gap of 0.95 eV. [21] Pure pyrite is naturally n-type, in both crystal and thin-film forms, potentially due to sulfur vacancies in the pyrite crystal structure acting as n ...

  6. Seabed mining - Wikipedia

    en.wikipedia.org/wiki/Seabed_mining

    Model of seabed mining technology. Seabed mining, also known as Seafloor mining [1] is the recovery of minerals from the seabed by techniques of underwater mining. The concept includes mining at shallow depths on the continental shelf and deep-sea mining at greater depths associated with tectonic activity, hydrothermal vents and the abyssal plains.

  7. Seafloor massive sulfide deposits - Wikipedia

    en.wikipedia.org/wiki/Seafloor_massive_sulfide...

    Economic extraction of SMS deposits is in the theoretical stage, the greatest complication being the extreme water depths at which these deposits are forming. However, apparent vast areas of the peripheral areas of these black smoker zones contain a sulfide ooze which could, theoretically, be vacuumed up off the seafloor.

  8. Marine resources - Wikipedia

    en.wikipedia.org/wiki/Marine_resources

    The official wording of the goal is to "Conserve and sustainably use the oceans, seas and marine resources for sustainable development". [1] Marine resources include: biological diversity (marine biodiversity) ecosystem services from marine ecosystems, such as marine coastal ecosystems and coral reefs; fish and seafood; minerals (for example ...

  9. Manganese nodule - Wikipedia

    en.wikipedia.org/wiki/Manganese_nodule

    The high natural abundance of nickel, copper, cobalt, zinc, iron, and manganese in ferromanganese nodules has promoted research into their use as a rare metal resource. The Clarion–Clipperton zone in the northeastern Pacific Ocean has been observed as an area containing the highest concentration of resource-grade nodules. [4]