Kimberlite, Transvaal 92 1 DeGrazia and Haskin (1964). 2Vincent and Crocket (1960b). 3Baedecker (1967). Assuming that the samples were similar in gold con tent, it would seem that Hagen's results are high by a factor of 20 to 30. Gold seems to be heterogeneously distributed to a marked degree in some samples.