Reported sulfate mineral in lunar meteorite PCA 02007 is impact glass.
Gross, J., Treiman, A. H. and Harlow, G. E.
Meteoritics & Planetary Science. doi: 10.1111/maps.12741
“A grain of light-blue sulfate material was reported in the lunar highlands regolith meteorite PCA 02007 (Satterwhite and Righter 2013). Allocated grains of that material are, in fact, aluminosilicate glass with a chemical composition like that of the bulk meteorite and other lunar highlands regoliths. The calcium sulfate detected in PCA 02007 was likely a surface coating, and reasonably of Antarctic (not lunar) origin.”