Slide Number: BH250-190
Number of slides: 12 (10 STD and 2 Polished)
Rock: Tuff form Nothern Minnesota collected Fall 2014 with George and Dean
Major minerals: Orthoclase, Plagioclase, Muscovite
Minor minerals: Oxides, Quartz
Photomircrographs:
1, 2, 3, 4, 5, 6
