Baryte under a microscope in polarised light

[malp]

This microscope image is of Baryte (Dirtlow Rake, Derbyshire, England) photographed with a Canon 40D using polarised light to bring out the striking mineral colours and seamed from 4 separate frames:

http://www.smugmug.com/gallery/11767360_3JLXY#851402877_d5UPJ-O-LB

[renormalised]

Beautiful 1st and 2nd order birefringence:)