Phlogopite, Diopside
Yates mine, Otter Lake, Pontiac RCM, Outaouais, Quebec, Canada
Small Cabinet, 8.1 x 6.0 x 3.7 cm
This is an incredibly thick "book" of microscopically thin sheets of phlogopite mica from Canada - it is hard to imagine how many are in this 3.3-cm thick stack. You can see the sharp hexagonal outline clearly here, the dark, smoky color, and the high reflectivity.