It is placed under the starched linen corporal when there is no altar stone.
Sewn inside the antimension is a small relic. This one dates from 1967. It is to never be laundered.
The rite of blessing in the Roman Ritual is interesting to see: http://www.sanctamissa.org/en/resources/books-1962/rituale-romanum/53-blessings-of-things-designated-for-sacred-purposes.html
It is placed under the three altar cloths, exactly where the altar stone which it replaces should be located.ReplyDelete