Biotite

Biotite

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16.2" Huge Book Jet Black BIOTITE MICA Crystal Sheets Bear Lake Ontario for sale

16.2" Huge Book Jet Black BIOTITE MICA Crystal Sheets Bear Lake Ontario for sale

This is an extra large crystal "book" of biotite mica, the variety of mica that is black due to iron.....
$75.00
4.8" Flashy Black BIOTITE MICA w/Green APATITE Crystal Bear Lake Canada for sale

4.8" Flashy Black BIOTITE MICA w/Green APATITE Crystal Bear Lake Canada for sale

Here is a large, lustrous book of iron-rich midnight black biotite mic, with a large green apatite c.....
$50.00
5.5" Jet Black Book of Iron-Rich BIOTITE MICA Crystals Bear Lake Canada for sale

5.5" Jet Black Book of Iron-Rich BIOTITE MICA Crystals Bear Lake Canada for sale

This is a specimen of biotite mica that is the iron-rich, dark brownish black cousin of muscovite mi.....
$40.00