Uranopilite after Uraninite on Feldspar
Size: 55x34x32mm
Approximate weight: 68.5 Grams
Formula: : (UO₂)₆(SO₄)O₂(OH)₆·14H₂Of
Locality: Le Limouzat Mine. Les Bois-Noirs Mining Claim, Saint-Priest-la-Prugne, Roanne, Loire, Auvergne-Rhône-Alpes, France
Uranopilite after uraninite — Rare bright yellow secondary uranyl sulfate mineral forming as delicate crusts or fibrous coatings on oxidized uraninite, representing advanced alteration of primary uranium ore in sulfate-bearing environments.
This specimen was stabilized with Paraloid B-72, a commonly used conservation material in the field of mineral preservation, providing excellent protective qualities for long-term conservation. The stabilization process infuses the specimen with an acrylic polymer, resulting in a more rigid and less friable specimen that won’t break or disintegrate over time under normal circumstances.
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