“An interlocking mass of olive to brown pigeonite crystals. Width of field is 1.8mm. Collection and photo Jesse Crawford. Nikon D-100 digital camera using a Leitz 5.6x ELWD objective and Olympus 2.5x NPK projective ocular on a Zeiss standard microscope frame. I use a Nikon UFX-II controller modified for use with the Nikon digital camera body.”