Saleeite - Pedro Alvero, Spain

Mg(UO₂)₂(PO₄)₂ · 10H₂O

Saleeite is a striking secondary uranium mineral renowned for its vibrant yellow to greenish-yellow crystals and its unique fluorescence under UV light. Found in Pedro Alvero, Spain, this phosphate mineral typically forms as tabular crystals or crust-like aggregates on host rocks. It occurs in oxidized zones of uranium deposits, forming through the alteration of primary uranium minerals such as uraninite or autunite. Saleeite’s bright coloration and distinct fluorescence make it a highly sought-after specimen among mineral collectors, particularly those focused on radioactive or phosphate minerals.

Pedro Alvero is recognized as a notable locality for saleeite due to its well-formed crystals and high-quality specimens. The region's geological conditions, including uranium-rich deposits and oxidation processes, create an ideal environment for saleeite formation. Collectors prize these specimens for their rarity and visual appeal, often displaying them under UV light to highlight their fluorescence. Beyond its aesthetic value, saleeite is significant to geologists studying uranium mineralization and secondary mineral processes, offering insights into the chemical interactions within oxidized uranium-rich environments.

Approx specimen size: 100mm x 75mm x 13mm

Approx activity on an SE International Ranger EXP: 59 000 cpm