Recent finds of sassolite (B2O3·3H2O) in southern California, Allen and Kramer (1957) and Smith, Almond, and Sawyer (1958) have prompted the author to place on record three heretofore unpublished localities. These sassolite finds, although not as well documented as could be desired, seem worth recording in the literature because of the present widespread interest in boron minerals and relative rarity of sassolite.

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