[quote="Coemgenus_O, post:1, topic:306963"]
So, when the text of the Mass is said by a woman who has had an invalid ordination performed on her, the Mass is obviously invalid. However, I've videos of Masses being concelebrated by these groups where at least one of the concelebrants is male, and quite possibly validly ordained.
So here's my question: if the main celebrant of the Mass is not ordained but at least one of the concelebrants has been, does transubstantiation occur?
I'm inclined to think no, but I can't really provide any theological backup to this.
I would agree with you, as If the main priest celebrant has been validly ordained and cconcelebrates Mass with the intention to consecrate then the Mass is valid but illict and transubstantiation will have occured. It is a grave and illict dereliction however was he is a priest who has excommunicated himself for participation in a simulated Mass.
If however, a women believing herself ordained said the words of consecration(as chief 'celebrant') even if the actual priest said part of the canon it would not be a Mass, nor would transubstantiation have occured as the priest did not say the words of consecration(said by the chief 'celebrant' alone) required for transubstantiation to occur. Matter, form and intention (in the priest) are required as far as I know for transubstantiation to occur, a women 'priest' would have at best intention only.