Prehnite finger cast after Anhydrite Ferberite but you don’t see pieces

but you don’t see pieces like this anymore

Viloco (sometimes called Araca) for many years has stood as one of the top Cassiterite localities in the world

this is also a great opportunity to obtain a good-sized single crystal of a species that is often only found in crude or microscopic crystals

and I don’t know specifically when they were found

and this beautiful multicolored gem crystal is no exception

Prehnite finger cast after Anhydrite Ferberite but you don’t see piecesA representative specimen of Prehnite fingers after Anhydrite with a darker green color, and a coating of a secondary clay mineral. Overall, the piece is actually in good condition, with a predominant finger flaring out of the center of the piece. The color in the photos is accentuated by the lighting we used to photograph the piece, but it is a bit more muted in person. The Prospect Park Quarry is arguably the most famous mineral producing basalt