Magnetite, Biotite

Faraday, Bancroft, Hastings County, Ontario, Canada

11,5×9,5×8 cm.

An impressive and rare specimen for dimensions, association and aesthetics : two big well defined octahedron crystals of Magnetite have grown on a large plate of Biotite with mirror luster and absolutely black color; a very fine older and highly representative piece  from this well-known Ontario locale.