X-ray diffraction data for 386 samples from the Exmouth and Wombat plateaus were collected. Bulk mineralogy was identified and semiquantitative relative abundances of clay, calcite, quartz, and feldspar were calculated based on intensities of characteristic peaks of each mineral.

Abundances: A = abundant, M = minor, T = trace, - = not present.

Supplement to: Wilkens, Roy H; De Carlo, Eric Heinen; Tribble, Jane S (1992): Data report: X-ray bulk mineralogy of Exmouth and Wombat Plateau sediments, Northwest Australian Margin. In: von Rad, U; Haq, BU; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 122, 887-896