Ferberite with Marcasite and Arsenopyrite Chalcanthite lustrous rich blue-green colored crystals

lustrous rich blue-green colored crystals of Amazonite with minor attached Albite (var:: Cleavelandite)

Specimen # BOL711B95

The terminations on the above specimen are very sharp and lustrous

Specimen # BOL711B47

and certainly different from the typical Cassiterites from Viloco

Ferberite with Marcasite and Arsenopyrite Chalcanthite lustrous rich blue-green colored crystalsA wonderfully well crystallized, and eye catching closed twin of Ferberite with great form, sharpness and luster is coated by spherical aggregates of pale golden Marcasite and minor grey Arsenopyrite. The piece is virtually undamaged on the display side and when propped up, the piece displays beautifully. Good Bolivian Ferberites are not often found with any associated minerals, especially with any kind of aesthetic appeal like this one. Its a great