A close-up image of GST1a showing the radiating sprays of pale pink gerstmannite crystals. The field of view in the photo is 3.4 cm across.
Identifier: GST1b Locality: 1120 stope above 1100 level, Sterling mine, Ogdensburg Specimen size: 10 x 6 x 4 cm Photo credit: Earl R. Verbeek