FRANKLINITE, a member of the spinel group of minerals, consisting of oxides of iron, manganese and zinc in varying pro portions (Fe, Zn, Mn)" (Fe, It occurs as octahedral crystals often with rounded edges, and as granular masses. The colour is iron-black and the lustre metallic ; hardness 6, specific gravity 5.2. It thus resembles magnetite, but is readily distin guished by the fact that it is only slightly magnetic. It is found in considerable amount, associated with zinc and manganese minerals in crystalline limestone, at Franklin Furnace, N.J., where it is mined as an ore of zinc (containing 5 to 2o% of the metal) ; after the extraction of the zinc, the residue is used in the manu facture of spiegeleisen.
(liberum maritagium), in real prop erty law, a species of estate tail, now obsolete. When a man was seized of land in fee simple, and gave it to a daughter on marriage, the daughter and her husband were termed the donees in f rank marriage, because they held the land granted to them, and the heirs of their two bodies free from all manner of service, except fealty, to the donor or his heirs, until the fourth degree of con sanguinity from the donor was passed.