Rock Name
Preview
![image preview](https://ecommons.udayton.edu/geo_metamorphic/1009/preview.jpg)
Color
Gray, Green
Texture
Foliated
Foliation
fissile, crinkled or wavy appearance
Composition
Varies, typically quartz, mica, and chlorite
Grade
Medium
COinS
Comments
surface displays a satiny luster or sheen