Definitions for "Plagioclase"
A general term used of any triclinic feldspar. See the Note under Feldspar.
a variety of feldspar non-metallic miner al.
A general name for the sodalime feldspars which vary in composition from a silicate of sodium and aluminum to a silicate of calcium and aluminum. Term includes all mixtures of these types.
Keywords:  oligoclase, another, name
Another name for Oligoclase.
Keywords:  vent, volcanic
Volcanic Vent