16.5" Large Book of Shiny Black BIOTITE MICA Crystals Bear Lake Ontario for sale

Product Code: EB0119BIOT4
Availability: In Stock
Qty: + -
Location Bear Lake Diggings, Monmouth Township, Ontario, Canada
Size 16.5" x 8.5" x 0.5"
Suggested Stand Large 3.4" Peg Stand

This is an extra large 16.5"  crystal "book" of biotite mica, the variety of mica that is black due to iron in its chemical formula. I collected this piece myself at the Bear Lake Diggings on a mining trip in 1999. The crystal is made up of thin sheets, a crystal habit referred to as lamellar. Thinner slices could be peeled off of the crystal, if you wanted to.