16.6" Book of Shiny Black BIOTITE MICA Crystal Sheets Bear Lake Ontario for sale

Product Code: EB0120BIOT4
Availability: In Stock
Qty: + -
Location Bear Lake Diggings, Monmouth Township, Ontario, Canada
Size 16.6" x 7.5" x 0.2"
Suggested Stand X-Large 8" Easel Stand

This is an extra-large, lustrous book of iron-rich midnight black biotite mica. The biotite is formed in thin lamellar sheets that are layered one on top of another, and which split very easily.  The name biotite has been discredited by the AMA, but it continues to be widely used because it has been used for centuries. This comes from the now-closed Bear Lake Diggings near Bancroft.