Franckeite on matrix (!) Hopeite Even though Brookite and Anatase

Even though Brookite and Anatase are polymorphs

Specimen # BOL711B161

Definitely different from your typical Viloco specimens

Specimen# CO712B65

and obtaining specimens is next to impossible because miners rarely bring out anything for sale

Franckeite on matrix (!) Hopeite Even though Brookite and AnataseFranckeite is a relatively rare iron, lead, tin, antimony sulfosalt, which is not often found in well crystallized display specimens, especially on matrix! This is one of the very few specimens of Franckeite that I have seen from the famous Siglo XX mine, and certainly one of the most eye catching. This piece hosts several groups of Franckeite consisting of somewhat "sword" shaped crystals forming spherical aggregates which are sitting on minor