picrite (Q41879)

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Picritic rocks (fine grained ultramafic or basaltic rocks with <53% SiO2, (Na2O+K2O)18%) defined chemically as having 1-2% (Na^2O+K^2O)
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English
picrite
Picritic rocks (fine grained ultramafic or basaltic rocks with <53% SiO2, (Na2O+K2O)18%) defined chemically as having 1-2% (Na^2O+K^2O)

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