Bayleyite on Matrix Pair
Locality: D-Day Mine, Thompsons Mining District, Grand County, Utah, USA
Larger Specimen
Approximate Weight: 21.3 Grams, Size: 54x50x10mmm
Smaller Specimen
Approximate Weight: 8.7 Grams, Size: 41x24x21mmm
Bayleyite is a bright yellow uranium carbonate mineral with the chemical formula: Mg2(UO2)(CO3)3·18(H2O). It is a secondary mineral which contains magnesium, uranium and carbon. Its crystal habit is acicular but is more commonly found as crusts on uranium bearing ores with a Mohs hardness of about 2–2.5.
Photographed with indoor and outdoor light. Fluorescence demonstrated using 365nm light.
This specimen was stabilized with Paraloid B-72, a consolidant commonly used in the field of mineral and fossil preservation. The stabilization process infuses the specimen with an acrylic polymer, resulting in a specimen that is less frangible.
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