If I were a betting man, I would say that the Code says "nefas est", without expounding upon whether such a consecration would be valid, because the Church just doesn't know, and warns in the strongest terms against even trying such a thing.
Sorry, the Church definitely DOES KNOW when a consecration of either species is valid and is not valid. These situations have been clearly defined in authoritative docuмents over the centuries. The easiest place to find those rules is the docuмent
De defectibus.
When proper
matter,
form,
intention are applied by a
valid minister, there is no question that the consecration of the individual species occurs.
In the Holy Sacrifice of the Mass, there are Two Consecrations that are required for a true Holy Sacrifice. The separate consecrations represent (sacramentally/mystically) the separation of Jesus's Body from his Blood on the altar.
If only one of the two consecrations is valid, then that one species is transubstantiated into the Body, Blood, Soul, and Divinity of Christ. But if the second of the two consecrations was not valid, then the Holy Sacrifice is not consummated. The Eucharist, however (in whichever species was transubstantiated) is Really Present in that liturgy in one species.
However, that does not make it okay to receive that Eucharistic species confected in that liturgy. If the Eucharist is consecrated OUTSIDE of the Mass or only in a single species, that act of consecration is objectively,
materially a sacrilege. To
knowingly confect one species without the other is a formal sacrilege. To
knowingly receive a sacrilegiously confected Eucharist is a formal sin.
So, the SSPX
says,
"It should be noted that the faithful still received Communion, since the consecration of the Holy Host was accomplished normally. On the other hand, the Mass did not take place in the case considered, because, to accomplish it, there must be the consecration of the two species."The SSPX correctly understands that a single consecration may have been accomplished. They also correctly understand that a single consecration is
not sufficient for the Holy Sacrifice to be consummated. However, they fail to put 2 and 2 together and acknowledge that such a situation is still "
nefas." Objectively, in the eyes of God, a "wicked" thing has occurred. Maybe from carelessness or out of ignorance. But it is still horrible. And reparation is called for.
The SSPX gives the impression that the damage is limited to "unfulfilled intentions" from the liturgies. They comfort "the faithful" by telling them that they "received Communion," as if that is what the main purpose of the Mass is. Wrong! Harm was done to Our Lord. The primary purpose of the Mass is
the propitiatory Sacrifice for our innumerable sins. If that Sacrifice does not occur, we have no right to receive the fruit of that Holy Mass, the Eucharist.
P.S. Every single
Novus Ordo liturgy is at least a
material sacrilege because the words "
mysterium fidei"/"the mystery of faith" have been removed from "the form" of the consecration of the wine. Yes, the words can be found in the
Novus Ordo liturgy, but they are spoken AFTER the priest officially finishes saying the words of "consecration." You can know this because the priest genuflects at the end of the Novus Ordo "consecration of the wine" and that genuflection takes place BEFORE the priest says "the mystery of faith."
Here is the proof:
Let's look at what the Vatican says about the timing of the words of "consecration" during the
Novus Ordo liturgy. This can be found in the
General Instruction of the Roman Missal (GIRM) which states:
274. ...During Mass, three genuflections are made by the priest celebrant: namely, after the showing of the host,
after the showing of the chalice, and before Communion. ...
43. ...Those who do not kneel ought to make a profound bow
when the priest genuflects after the consecration. ...
So, from these two quotes from the official Vatican instruction manual for the
Novus Ordo liturgy, we can understand precisely that one of the three genuflections in the
Novus Ordo takes place immediately AFTER the consecration of the chalice.
If you look at any
Novus Ordo missal, you can see that the rubrics require the priest to genuflect BEFORE he says "mysterium fidei"/"the mystery of faith." Here are the exact words from the Missal:
The Consecration of the Wine[The priest uncovers the Chalice and says:]
[He takes the chalice and, holding it slightly raised above the altar, continues:]
P: In a similar way, when supper was ended, he took this precious chalice in his holy and venerable hands, and once more giving you thanks, he said the blessing and gave the chalice to his disciples, saying:
[He bows slightly.]
TAKE THIS, ALL OF YOU, AND DRINK FROM IT, FOR THIS IS THE CHALICE OF MY BLOOD, THE BLOOD OF THE NEW AND ETERNAL COVENANT, WHICH WILL BE POURED OUT FOR YOU AND FOR MANY FOR THE FORGIVENESS OF SINS. DO THIS IN MEMORY OF ME
[The bell is rung the priest shows the chalice to the people, places it on the corporal, and
genuflects in adoration].
P: The mystery of faith.
[The people continue, acclaiming:]
R: We proclaim your Death, O Lord, and profess your Resurrection until you come again.
Or:R: When we eat this Bread and drink this Cup, we proclaim your Death, O Lord, until you come again.
Or:R: Save us, Saviour of the world, for by your Cross and Resurrection you have set us free.
Please note that the phrase "the mystery of faith" is said AFTER the priest genuflects. But as the GIRM says, the "consecration" happens BEFORE that genuflection. Therefore, in the
Novus Ordo liturgy, the words "the mystery of faith" are not considered to be included in the words of "consecration."
Again, as I have demonstrated, this is not my opinion. The official texts from the Vatican
require this interpretation.