Two large and numerous much smaller grains of violet breithauptite, all of them embedded in pararammelsbergite and several in contact with coppery nickeline. Note in particular the small blebs of breithauptite in pararammelsbergite close to its contact with nickeline in the lower right quadrant of the image. The strong reflection pleochroism of breithauptite is also visible in this image: the largest grain, for example, is of lavender color, but the small grains to the left of center are pale pinkish-lavender. Field of view: The horizontal width is approximately 0.2 mm.
Identifier: BTH1c Locality: Trotter mine, Franklin Specimen size: 9.5 x 6.5 x 0.6 cm Photo credit: Hoyt B. Sutphin
