Dissolved potassium in the shallow groundwaters circulating in the volcanic rocks of central-southern Italy

A Chemical Classification of Volcanic Rocks Based on the Total Alkali-Silica Diagram

M. J. Le Bas, R. W. Le Maitre, A. Streckeisen et al. · Journal of Petrology · 1986 · 6.6K citations

Natural Sciences, Chemistry, Earth Sciences +17

SUPCRT92: A software package for calculating the standard molal thermodynamic properties of minerals, gases, aqueous species, and reactions from 1 to 5000 bar and 0 to 1000°C

James W. Johnson, Éric H. Oelkers, Harold C. Helgeson · Computers & Geosciences · 1992 · 2.6K citations

Natural Sciences, Earth Sciences, Geology +16

Geothermal solute equilibria. Derivation of Na-K-Mg-Ca geoindicators

Werner F. Giggenbach · Geochimica et Cosmochimica Acta · 1988 · 2K citations

Natural Sciences, Earth Sciences, Geology +14

Thermodynamics of hydrothermal systems at elevated temperatures and pressures

Harold C. Helgeson · American Journal of Science · 1969 · 1.5K citations · Full text

Natural Sciences, Chemical Engineering, Chemistry +15

Evaluation of irreversible reactions in geochemical processes involving minerals and aqueous solutions—I. Thermodynamic relations

Harold C. Helgeson · Geochimica et Cosmochimica Acta · 1968 · 429 citations

Natural Sciences, Earth Sciences, Geology +17