BH250-67

BH250-67

Number of slides 5

Rock: Schist from Black Hills, South Dakota, at 244/16A instersection ( 43°53'7.86"N, 103°26'13.67"W)

Major minerals: Biotite, Muscovite, Quartz

Minor minerals: Garnet

Photomircrographs:

1, 2, 3, 4, 5, 6