16.3" Huge Book of Black BIOTITE MICA Crystal Sheets Bear Lake Ontario for sale

Product Code: EB0120BIOT5
Availability: In Stock
Qty: + -
Location Bear Lake Diggings, Monmouth Township, Ontario, Canada
Size 16.3" x 7.6" x 0.5"
Suggested Stand X-Large 8" Easel Stand

This is a very large, lustrous crystal 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 today because it has been in use for centuries.