10.1594/PANGAEA.776048Simanovich, Igor MIgor MSimanovichPANGAEA1979Sample code/labelDEPTH, sediment/rockDepth, top/minDepth, bottom/maxSilicon dioxideAluminium oxideCalcium oxideSodium oxidePotassium oxideSumDrilling/drill rigDSDP/ODP/IODP sample designationMicroprobeCalculatedLeg19Glomar ChallengerArchive of Ocean Data (ARCOD)Deep Sea Drilling Project (DSDP)Geological Institute, Russian Academy of Sciences, Moscowhttps://ror.org/02f0cra241971-08-30T00:00:00Supplementary Dataset27 data pointstext/tab-separated-valuesCreative Commons Attribution 3.0 UnportedSecondary potassium feldspar (K-feldspar) in oceanic basalts represented by low-temperature sanidine with low content of albite molecule. K-feldspar replaces nucleus of phenocrysts and large microlites of plagioclase. Occurrence of K-feldspar increases with age of rocks; in Pliocene and Pleistocene basalts from zones of mid-ocean ridges K-feldspar is absent. K-feldspar is developed in basalts of various geological, textural and structural types. Correlation of K-feldspar occurrence with primary alkalinity of basalts is absent. High (1-6%) contents of K2O in basalts in almost all cases are associated with development of K-feldspars in them. In basalts containing K-feldspars, a clear correlation between K2O and H2O (R = 0.55) is observed.Supplement to: Simanovich, Igor M (1979): Potassium feldspar in oceanic basalts. Litologiya i Poleznyye Iskopaemyye (Lithology and Mineral Resources), 14(1), 52-61164.713553.0095North Pacific/GUYOT