80 quartzite, gritty, feldspathic, containing angular grains of light grey feldspar and quartz in about equal proportions in a schistose, slightly chloritic, quartz-sericite matrix; about 20 per cent quart- zite, pale buff to greenish grey, slightly micaceous; a few beds of conglomerate up to 25 feet thick .................... SG0nd0 SE Quartz-chlorite schist; quartzite, chloritic, well bedded, in part erossbedded 6... sickens