Geochemistry of primordial Pb, Bi, and Zn in Apollo 15 samplesPrimordial Pb as Pb-204 is present in Apollo 15 samples in concentrations ranging from less than 0.2 ppb in basalts to 6 ppb in soils. An acid soluble, pH-5-6, readily volatile component of this Pb is present, possibly as PbBr2; the remainder is correlated with the metal content of the sample. Leachable Bi and Pb-204 are correlated; residual Bi is probably present in a phosphate, possibly apatite. Zn is also highly leachable; residual Zn and Pb-204 are correlated.
Document ID
19740040134
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Allen, R. O., Jr. (Argonne National Laboratory, Argonne, Ill.; Virginia, University Charlottesville, Va., United States)
Jovanovic, S.
Reed, G. W., Jr. (Argonne National Laboratory Argonne, Ill., United States)