Abstract
Megascopic spherulitic aggregates of wavellite have been recently found in the Florida land-pebble phosphate field.
Petrographic studies were made to establish the identity of the mineral. Chemical and spectrographic data revealed the spherulites to be practically pure wavellite; the remainder is composed of phosphatic cement partly altered to wavellite.
The origin of wavellite is considered to be secondary, a replacement of apatite that has undergone ground-water leaching.
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