Franckeite (rare matrix specimen!)

Item Description

This is one of the rarest sulfosalts in the world. This specimen is a very rich, incredibly rare, superb quality, crystallized specimen of the triclinic lead, tin, iron, antimony sulfosalt Franckeite consisting of somewhat "sword"-shaped crystals oriented into spherical aggregates associated with minor "needle" like crystals of Jamesonite with dark brass colored groups of Stannite on blocky orthorhombic crystals of Arsenopyrite sitting on matrix!! You must understand that about 1% of all the Franckeite specimens from San Jose are actually on matrix. This piece is a great small cabinet specimen for somebody looking to own a rare and highly displayable mineral specimen. A good opportunity to acquire something that is rarely offered in the open market for a great price. This species belongs to the only group of minerals that forms in naturally "round" or "cylindrical" shaped crystals. This specimen is over 30 years old and was part of the best find of the material. There were only a handful of good specimens, and well crystallized display pieces like this (especially on matrix) are few and far between. Valued at $1500 retail for rarity, quality and the fact that matrix pieces are almost non-existent.