“Triangular sections of tetrahedral crystals of Goldfieldite. Well formed its crystals are wisible in the cavity at the right part of the picture. Beige Cuzticite microcrystalline spherulitic agregates grow on the bottom of this cavity. Other cavities in upper part of the image are filled with brownish aggregates of Pyrophillite and Hydromica mixture. FOW ~1.5x1.1 cm. Pavel M. Kartashov collection and photo”