not consecrated by a valid mass.
At seminary the priest is (hopefully) taught that he makes the specific intention to consecrate only those things that are on the corporal, a square piece of cloth that is brought to the altar folded under the chalice veil and unfolded by the priest at the start of low mass or during the offertory at high mass. Theoretically, a priest could consecrate a massive amount of bread placed on a table, but in the old rite this would have constituted a massive, notorious sacrilege, and the guys in the black SUVs would have taken that man to the deepest, darkest part of Regina Coeli, ten stories beneath the Lateran.
Many times I have wondered about whether to genuflect upon entering a Novus ordo church. I always genuflect conditionally, saying, Lord, if you are in there... (Of course, there are some Novus Churches where I know the matter is certainly invalid, and I do not even bother to do that.)
For a while I was at FSSP in Scranton, PA. It came to my intention that Novus Ordo hosts [from the sole Novus Ordo said on Saturday night for 3.5 people (there was a huge N O parish a block down the street that had "mass" at the same time, for crying out loud, and it was "conservative", to boot.)] were being mixed with the contents of what was consecrated by the daily Tridentine Masses and Sunday Masses. I stopped receiving communion and a weak later the priest asked why. I told him. The priest started the practice of consecrating ciboria at that mass and only opening the tabernacle at the end of the communion service. About two months later he secretly told me the practice had been stopped. (At this point I would not receive communion at any FSSP chapel but will not elaborate here... read my post "sacramentum disordinis"...). I guess the FSSP really neaded my endorsement. :D
But once again, this discussion is like talking about walking through a minefield while avoiding dog poop.
The N O is a sacrilege. Avoid it. Stay home, say your rosary, and preach in season and out of season to the apostates going there...
regards....