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- n. Plural form of uraninite.
Sorry, no etymologies found.
Furthermore the uraninites occur at the bottom of basins, often near uncomformities, below uranium bearing rocks, where we would expect such hydrothermal deposits to be found.
From these considerations it would seem that unless the atomic weight of lead in uraninites, etc., is 206, the former complexity and more accelerated decay of uranium are indicated in the data respecting the atomic weights of radium and lead .