Specimen Number29-9-018Alternate NumberY17-19CommentsFelsic dike, quartz + plagioclase + biotite. Clots of intergrown k-spar + biotite suggest sample has been potassically altered. Minor chlorite + zircon + epidote + muscovite.In Teaching CollectionNoMineral(s)quartzplagioclasebiotitek-sparchloritezirconepidotemuscoviteRock Namealtered tonaliteDistrictYuraMineCharlieDeposit TypeOrogenicThin SectionBox 8, slot 61Geo-Coords[1] Donated ByFrom the research collection of Dr. Paul Spry.