roche (1) association (1) mélanger (1) acide (1) île (1) Composition (1) Area (1) Hydrothermal alteration (1) Area (1) Zeolites (1) Volcanic ash, tuff, etc (1) Veins (1) Sulfides (1) Social groups (1) Smectite (1) Silicates (1) Seawater (1) Salt (1) Rocks (1) Quartz (1) Precious stones (1) Oxides (1) Mixing (1) Heulandite (1) Halides (1) Fluorspar (1) Fluids (1) Epidote (1) Clinoptilolite (1) Carbonates (1)