Boltwoodite on Gypsum Matrix from China – Stabilized
Size: 35x25x23mm
Weight: 19.2 grams
Locality: Dongchuan Kunming Yunnan, China
Boltwoodite is a rare mineral belonging to the uranyl silicate hydrate group. It is named after Charles Boltwood, an American chemist. Boltwoodite typically occurs as small, prismatic to tabular crystals or as coatings on the surface of other minerals. In terms of its composition, Yellow Boltwoodite contains uranium, calcium, silicon, oxygen, and water molecules. Its formation is associated with hydrothermal processes involving the leaching of uranium-bearing minerals and subsequent precipitation in fractures and cavities. Gypsum, a common evaporite mineral, often serves as a host rock for Yellow Boltwoodite crystals.
Stabilized with Butvar B-76, a polyvinyl butyral (PVB) resin commonly used as an adhesive and consolidant in conservation, particularly for delicate or porous materials like wood, bone, or stone. It is valued for its clarity, flexibility, and reversibility, making it ideal for stabilizing fragile archaeological or paleontological specimens. Butvar B-76 is the matte alternative to Paraloid B-72 which has more shine.
The buyer must assume responsibility for this item and use it according to its intended purpose. Keep this away from children and store it at least three feet from anywhere anyone spends a lot of time.
Geiger counter not included.
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