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Bog ore. Bog iron is a form of impure iron deposit that develops in bogs or swamps by the chemical or biochemical ... Factors such as local geology, parent rock ...
The above classification scheme is the most commonly used and accepted, though sometimes an older system is used which divides iron-rich sedimentary rocks into three categories: bog iron deposits, ironstones, and iron formations. A bog-iron deposit is iron that formed in a bog or swamp through the process of oxidation.
Bog iron ore. Limonite is named for the Ancient Greek word λειμών (leimṓn [leː.mɔ̌ːn]), meaning "wet meadow", or λίμνη (límnē), meaning "marshy lake", as an allusion to its occurrence as bog iron ore in meadows and marshes. [6] In its brown form, it is sometimes called brown hematite [7] or brown iron ore. [8]
Iron smelting from bog iron was invented during the Pre-Roman Iron Age, and most Viking Age iron was smelted from bog iron. The bog iron deposits of Northern and Northeastern Europe were created after the Ice Age ended, on postglacial plains. In Russia, bog ore was the principal source of iron until the 16th century, when the superior ores of ...
The Erie area's more than 100-year reign as a major iron product manufacturing center began with the discovery of major bog iron deposits in the early 1800s along the shores of Presque Isle Bay ...
Geography and geology both impact the hydrology: as groundwater mineral content reflects the bedrock geology, there can be great deal of variability in some common ions (e.g. manganese, iron) while proximity to coastal areas is associated with higher sulfate and sodium concentrations. [15]
Goethite is an iron oxyhydroxide containing ferric iron. It is the main component of rust and bog iron ore. Goethite's hardness ranges from 5.0 to 5.5 on the Mohs Scale, and its specific gravity varies from 3.3 to 4.3. The mineral forms prismatic needle-like crystals ("needle ironstone" [3]) but is more typically massive. [2]
Iron is important in phosphorus cycling within fens. Iron can bind to high levels of inorganic phosphate within the fen, leading to a toxic environment and inhibition of plant growth. [ 24 ] In iron-rich fens, the area can become vulnerable to acidification, excess nitrogen and potassium, and low water levels. [ 27 ]