plagioclase definition

plagioclase means any of a group of feldspars containing a mixture of sodium and calcium feldspars, distinguished by their extinction angles; crystal; triclinic.
plagioclase means a group of triclinic feldspars of general formula. Plagioclase minerals are among the commonest rock-forming minerals.
plagioclase means a series of triclinic feldspars, consisting of mixtures of sodium and calcium aluminum silicates; “Pluton” means a deep seated igneous intrusion;

More Definitions of plagioclase

plagioclase means a group of minerals in the feldspar category,

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