Seligmannite with Pyrite
specimen number:
1052465
location:
Lengenbach Quarry, Fald, Binn, Goms, Valais, Switzerland
description: Seligmannite is a rare lead copper arsenic sulfide mineral that typically occurs as small metallic gray crystals or granular aggregates. It is most often found in complex hydrothermal environments where a variety of sulfosalt minerals form under specific chemical conditions. One of the classic localities for seligmannite is the Lengenbach Quarry in Binntal, Switzerland, a world famous site known for its exceptional diversity of rare sulfosalt minerals. The geology of the quarry consists of dolomitic rocks that have been mineralized by low temperature hydrothermal fluids, creating cavities rich in unusual mineral species. At Lengenbach, seligmannite is typically found in association with other rare sulfosalts, often occurring as small but well defined crystals within dolomite matrix. The locality is highly regarded for its scientific importance and the complexity of its mineral assemblages.
Lustrous metallic crystallized seligmannite on matrix with pyrite. A good rich example for the species. Classic locality. The specimen comes with an antique label as shown at the end of the video and dates to the early 20th century.
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