Pekoite, Gladite, Krupkaite

Locality: Akchatau Mine, Akchatau (Aqshatau ; Akschatau; Akchataul), Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan

Rhombic section of the large prismatic Pekoite crystal 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 contains 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 Andrey V. Efimov in 1987. Pavel M. Kartashov collection (#2122) and photo.

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Photo added: 22nd Aug 2006

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