Cadmium-rich? cave Calcite (very rare) Sinkankas Coll.

Item Description

A striking, most colorful and perhaps unique cave calcite from Tooele County, Utah and the John Sinkankas Collection. Shocking, translucent, canary-yellow, stalagmitic calcite botyroids are thought to be colored by cadmium. John purchased this stunning rarity in 1960. Value to the species or locality collector???