ferrikarbonat

Ferrikarbonat is a compound that refers to iron carbonate. Typically, it is encountered as iron(II) carbonate, with the chemical formula FeCO3. This compound is a pale green solid that is insoluble in water. It is a common mineral and is the primary component of the mineral siderite. Siderite is found in various geological settings, including sedimentary rocks like shale and coal seams, as well as in hydrothermal deposits. Iron(II) carbonate can be formed through the reaction of iron(II) ions with carbonate ions in aqueous solutions. It is susceptible to oxidation in the presence of air and moisture, transforming into iron(III) oxides and hydroxides, which are responsible for the reddish-brown coloration often associated with weathered iron-bearing minerals. In biological contexts, iron(II) carbonate plays a role in some microorganisms involved in iron cycling. The term "ferrikarbonat" could also, in principle, refer to iron(III) carbonate, but this compound is generally considered unstable and does not readily exist under normal conditions. The more common and stable form is iron(II) carbonate.