Pertsev, Nikolay N; Boronikhin, V A (1983): (Table 4) Geochemistry of clay minerals, DSDP Sample 69-504B-16-2,34-36, Piece 976. PANGAEA, https://doi.org/10.1594/PANGAEA.816438, In supplement to: Pertsev, NN; Boronikhin, VA (1983): Alteration zones near veins in basalts from Deep Sea Drilling Project Sites 501/504 and 505, Costa Rica Rift. In: Cann, JR; Langseth, MG; Honnorez, J; Von Herzen, RP; White, SM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 69, 565-572, https://doi.org/10.2973/dsdp.proc.69.129.1983