feldspathic sandstone
feldspathic sandstone
[fel′spath·ik ′san‚stōn] (petrology)
Sandstone rich in feldspar; intermediate in composition between arkosic sandstone and quartz sandstone, made up of 10-25% feldspar and less than 20% matrix material.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.