Coarse and fine fractions of samples from dredge hauls and cor es taken in a detailed survey in the area of 22°N on the Mid-Atlantic Ridge were studied by x-ray diffraction and petrographic microscopy.
Siever, Raymond, and Miriam Kastner. 1967. "Mineralogy and petrology of some Mid-Atlantic Ridge sediments." Journal of Marine Research 25, (3). https://elischolar.library.yale.edu/journal_of_marine_research/1103