Uranopolycrase

uranopolycrase

polycrase-(Y)

euxenite-(Y)

titanowodginite

Images

Formula: UTi₂O₆
Valence: U⁴⁺Ti⁴⁺₂O₆
Oxide of uranium and titanium, euxenite group
Crystal System: Orthorhombic
Specific gravity: 6.60 calculated
Hardness: 5 to 6
Colour: Brown-red, dark brown-red internal reflections
Common impurities: Th,Mn,Ca,Nd,TR
RADIOACTIVE
Environments

Pegmatites

Localities

At the type locality, Fonte del Prete, San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy, uranopolycrase occurs in a zoned pegmatite vein with abundant Nb,Ta minerals and zeolites, near the contact with granodiorite. The uranopolycrase is almost totally metamict. Associated minerals include uranoan polycrase-(Y), euxenite-(Y), columbite-(Mn), titanowodginite, beryl, stilbite, quartz, orthoclase, albite, lepidolite and elbaite (HOM, Mindat).
Uranopolycrase from Fonte del Prete - Image

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