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

$80.00
Product Code: EB0619BIOT4
Availability: In Stock
 
Qty: + -
Location Bear Lake Diggings, Monmouth Township, Ontario, Canada
Size 16.2" x 8.1" x 0.4"
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.