Rare Stilpnosiderite Mineral: Lead, Copper, and Sulfur Crystals

Stilpnosiderite is a rare mineral species that belongs to the group of sulfosalt minerals. It is composed of lead, copper, and sulfur, with the chemical formula PbCuS. It was first discovered in 1865 in the Stilpon mine in Greece, hence its name.

Stilpnosiderite crystallizes in the monoclinic crystal system and typically forms tabular or prismatic crystals with a vitreous luster. It is usually found in the oxidized zones of lead-copper deposits, often associated with other minerals such as galenite, sphalerite, and pyromorphite.

Stilpnosiderite is considered a rare mineral, and its occurrence is limited to a few localities around the world, including the Stilpon mine in Greece, the Tsumeb mine in Namibia, and the La Caridad mine in Spain. It is highly sought after by collectors due to its rarity and distinctive crystal formations.

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