Granules containing excessive amounts of this element in certain cells are known as Pappenheimer bodies and this element is chelated by siderophores.
Granules containing excessive amounts of this element in certain cells are known as Pappenheimer bodies and this element is chelated by siderophores. A gamma ray emitting isotope of this element with a molecular weight of 57 was used to verify the predictions of general relativity by Pound and Rebka. This element can be dumped into the ocean to induce algal blooms. This element is found between two cyclopentadiene ligands in the first "sandwich" metallocene complex ever synthesized. This element is generally purified from ores like magnetite and hematite. A deficiency of this element can lead to anemia. For 10 points, name this element found in hemoglobin, with symbol Fe. 
Granules containing excessive amounts of this element in certain cells are known as Pappenheimer bodies and this element is chelated by siderophores.
iron [or Fe] 