Slide Number: BH250-165
Number of slides: 12
Rock: Andesitic lava flow from northern Minnesota, collected on Geo Fieldtrip
Major minerals: Biotite, Albite, Quartz
Minor minerals: Calcite (secondary), Plagioclase
Photomircrographs:
1, 2, 3, 4, 5, 6, 7, 8, 9
