Columbite-Tantalite ps after Fluornatromicrolite (RARE!) ex Obodda

Item Description

Super RARE pseudomorph material from the famous Pech pegmatite field! Lustrous gray-brown Columbite-Tantalite has pseudomorphed a well-placed 2.2 cm intergrown pair of sharp Fluornatromicrolite octahedrons on the feldspar-quartz matrix. Fluornatromicrolite is a rare Na-Bi-Ta oxide, a member of the Pyrochlore Supergroup. Rare, perhaps UNIQUE pseudo material from Pech. There is only one Fluornatromicrolite photo in the locality Photo Gallery and NO pseudos. Ex Herb Obodda dealer stock. Value of such a rare pseudo??