* In
common language the Genitive of the substantival possessive
pronoun is not used. There is another form of a possessive
that could be used (der meinige, die meinige, das meinige),
but it sounds really antiquated. If you want to form
a Genitive of meine
it is mostly done like in English.
Das ist der
Schlüssel von meinem
(Auto etc.).
= This is the key of mine. (my car etc.)
If absolutely necessary one could also use meinige,
it just isn't common to do so:
Das ist der
Schlüssel des meinigen.
= This is the key of mine.
The thing that is owned is die
Schachtel (a box): feminine, singular, acusativo
Example:
die Schachtel (= box) possessed object => feminine,
singular
Ich
sehe meine, aber deine nicht. (Accusative)
= I see mine but not yours.
Example:
das Kleid (= dress) possessed object =>
neutral, singular
Du
kannst mit meinem hingehen. (Dative)
= You can go with mine.
Example:
die Häuser (= house) possessed object
=> neutral, plural
Ich sehe meine, aber deine nicht.
= I see mine but not yours.