Gaylussite ps. After Calcite (RARE & rare locale)

Item Description

Mineral specimens of any species are RARE from this very obscure locality near the famous and extinct phosphate deposits of the Kerch Peninsula. Gaylussite is a rare hydrated carbonate with alkali metals found in lacustrine (lake) clay sediments in an alkali lake. Bone-white gaylussite has pseudomorphed a stellate floater cluster of dogtooth calcite crystals. Complete all-around and pristine.. This showy pseudomorph may be unique. Comes with a probably late 1980s - early 1990s Rocksmiths label indicating Kirgizia in Kazakhstan, USSR. MINDAT does not list the species from there. Undoubtably, the true locality was unknown at that time. A must for the locality or species collector.