Rhombic section of the large prismatic pekoite crystall replaced by gladite and krupkaite crystals overgrown. Main part of the crystal now is composed by gladite with pekoite relicts, then grow pure gladite zone ~0.5-3 mm, and krupkaite crust. Single krupkaite crystals contain gladite cores. Specimen size is 5x3x2 cm (initially it was 8 cm long, but was partially used for polished sections preparation)). Collected and investigated by A.V. Efimov in 1987. Pavel M. Kartashov collection (#2122) and photo.
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