Quartz (doubly-terminated) on Siderite

Item Description

While Panasqueira is best known for its wonderful Fluorapatites and Ferberites, there are plenty of associated minerals that make for excellent display pieces, like this one. This full-sized miniature hosts a sharp, lustrous, gemmy, colorless, doubly-terminated Quartz crystal measuring 4.0 cm, along with another Quartz crystal on the back (which appears to also be doubly-terminated), sitting atop a predominant, compressed, thick tabular, golden-brown crystal of Siderite plus additional smaller "rosette"-esque groups of Siderite. A bit of Muscovite can be seen as well on the back for an additional touch. The piece remarkably aesthetic, with no major damage on the top/display side, though I can see a TINY bit of chipping on the termination of the main Quartz crystal. You don't see a lot of Quartz/Siderite standalone combo specimens like this from Panasqueira, especially such eye-catching and three-dimensional display pieces. From the collection of Vasco Trancoso, a medical doctor and prominent mineral collector from near Lisbon, Portugal (https://www.mindat.org/user-11954.html). He assembled his mineral collection over the course of 60 years, and built a fine worldwide display collection that we recently purchased. This piece is pictured on mindat.org at https://www.mindat.org/photo-189596.html