AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Canada > Biotite Mica

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Biotite Mica from Bancroft, Ontario, Canada

 
Biotite Mica from Bancroft, Ontario, Canada

DESCRIPTION:No. 33439
Mineral:Biotite Mica
Locality:Bancroft, Ontario, Canada
Description:Large crystal of black biotite mica with smooth faces and termination face on one end. Biotite has been eliminated as a mineral species and is now a group containing dark micas Annite and Phlogopite. Only testing can determine the species.
Overall Size:9x5x3 cm
Crystals:9 cm
Archived: For reference only

 

 

 

 

 

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