Does a new natural spontaneously fissioning nuclide concentrate in ocean concentrations concentrate in ocean concentrations

To search for superheavy elements (SHE) in nature iron-manganese concentrations deposited at the bottom of the Pacific Ocean have been studied. Using the carbonate leaching method selective uranium extraction from the concentrations is carried out. Concentration of a new natural spontaneously fissioning nuclide is measured. Comparison of the new nuclide content with the content of the known elements in the cancentrations is made. It is shown that the low degree of the nuclide extraction in the concretions does not contradict the forecast of SHE chemical properties and consequently the supposition on the nuclide attribution to SHE