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Secondary Uranium Minerals on the Surface of Chernobyl “Lava”

Published online by Cambridge University Press:  03 September 2012

B. E. Burakov ,
E. E. Strykanova  and
E. B. Anderson
B. E. Burakov
Affiliation:
V.G. Khlopin Radium Institute, 28, 2nd Murinsky ave., 194021, St. Petersburg, Russia
E. E. Strykanova
Affiliation:
V.G. Khlopin Radium Institute, 28, 2nd Murinsky ave., 194021, St. Petersburg, Russia
E. B. Anderson
Affiliation:
V.G. Khlopin Radium Institute, 28, 2nd Murinsky ave., 194021, St. Petersburg, Russia
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Abstract

The formation of uranium minerals is still continuing in Chernobyl Unit No. 4. Yellow products of alteration that stain the surface of Chernobyl “lava” have been examined by SEM and X-ray diffraction methods. Secondary minerals of uranium identified are: UO4·4H2O studtite; UO3·2H2O epiianthinite; UO2·CO3 rutherfordine; also, Na4(UO2)(CO3)3 was identified together with the sodium carbonate phases Na3H(CO3)2·2H2O and Na2CO3·H2O. These minerals formed due to the interaction between fuel-containing masses or “lava”, water and air. The matrices of the “lava” do not contain significant amounts of sodium. The source of sodium may be water that has penetrated into the “Sarcophagus”. All identified secondary minerals of uranium are highly unstable, and their continued formation can seriously endanger the radiological situation of the 4th Unit.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 465: Symposium II – Scienfific Basis for Nuclear Waste Management XX , 1996 , 1309
Copyright
Copyright © Materials Research Society 1997

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References

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