The reverse side of specimen FMM-1441, showing the rich color and intricate texture of the intergrown grains of sussexite. Note, toward the right, the small, zincite-lined voids in the altered, solution-etched ore, which contains franklinite as the only surviving original phase.
Identifier: SSX16b Locality: South limb of the North orebody, Sterling mine, Ogdensburg Specimen size: 26 x 12 x 4 cm Photo credit: Earl R. Verbeek