Book,  Part, Title, Chapter, Can.

 1   4,   1,    3,   1, 932 |    must be carried out at an altar that is dedicated or blessed.
 2   4,   1,    3,   1, 932 |     used, but always with an altar cloth and a corporal. ~
 3   4,   3,    1,   4, 1235|             Can. 1235 §1 The altar or table on which the eucharistic
 4   4,   3,    1,   4, 1235|      there should be a fixed altar. In other places which are
 5   4,   3,    1,   4, 1235|     of sacred functions, the altar may be either fixed or movable. ~
 6   4,   3,    1,   4, 1236| Church, the table of a fixed altar is to be of stone, indeed
 7   4,   3,    1,   4, 1236|      material. ~§2 A movable altar can be made of any solid
 8   4,   3,    1,   4, 1237|  other Saints within a fixed altar is to be retained, in accordance
 9   4,   3,    1,   4, 1238|              Can. 1238 §1 An altar loses its dedication or
10   4,   3,    1,   4, 1239|              Can. 1239 §1 An altar, whether fixed or movable,
11   4,   3,    1,   4, 1239|      to be buried beneath an altar; otherwise, it is not lawful
12   4,   3,    1,   4, 1239|    to celebrate Mass at that altar. ~