Oxyuranobetafite, Oxycalciopyrochlore (Var: Titan-uranoan Oxycalciopyrochlore), Fluorite, Anhydrite, Baryte

Specimen ID: J5E-18P

Mineral(s)
Oxyuranobetafite : (U,Ca,◻)2(Ti,Nb)2O6O
Oxycalciopyrochlore (Var: Titan-uranoan Oxycalciopyrochlore) : (Ca,U,Na)2(Nb,Ti,Ta)2O6(O,OH)
Fluorite : CaF2
Anhydrite : CaSO4
Baryte : BaSO4
Locality
Mindat locality:
Events

Photo added to mindat.org

SEM image of preparate of regolith. The smaller brightest in BSE octahedron is holotype of Oxyuranbetafite with composition (U0.81Ca0.66Y0.09REE0.14)1.70(Ti1.04Nb0.89Ta0.07)2.00O7.105. The larger broken octahedron nearby has composition of Titan-uranoan Oxycalciopyrochlore - (Ca0.91U0.77Y0.06REE0.07)1.81(Nb0.98Ti0.94Ta0.08)2.00O7.175. Dark-grey matrix represented by microgranular Anhydrite. Grey in BSE isometric grains are Fluorite. Medium bright particle at the top of the image is grain of Baryte. This association in whole is the first direct evidence of existence of carbonatite process on the Moon. IGEM RAS Lunar regolith collection. AVM & PMK photo and analytical data.
Pavel Kartashov - 26th December 2010
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