Opal claystone associated with phosphate rock in northern Saudi Arabia /

Bibliographic Details
Main Author:	Outerbridge, William F.
Corporate Authors:	Saudi Arabia. Deputy Ministry for Mineral Resources, Geological Survey (U.S.)
Other Authors:	Meissner, Charles R.
Format:	Government Document Microform Book
Language:	English
Published:	[Reston, Va.] : Dept. of the Interior, U.S. Geological Survey, 1986.
Series:	U.S. Geological Survey open-file report ; 86-103.
Subjects:	Clay minerals > Saudi Arabia > Composition. Phosphate rock > Saudi Arabia > Composition.