314 SILICATES. o = 3'4l, r from Kullberg near Stockholm, g = 2'88, both by Berlin, s from Eriksberg in Stockholm, g = 2'78, by Bahr:— Silica Alumina.... Protoxide of iron . Oxide of cerium . Oxide of lanthanium Lime Protoxide of mangan Magnesia . . . Tttria .... "Water .... Potash and Na . . 71 0 P <1 36-25 32-00 36-24 33-05 14-00 14-80 8-18 15-29 11-42 12-44 9'06 16'64 17-39 19-44 4-98 1 ^ 20-55 4-87 7-84 5-48 10-18 1-36 3-40 0-61 J ^ 1-58 3-80 3-44 29-81 1-18 8-70 6-36 4-59 1-24 — — 0-61 C r 27-69 16-14 16-01 32-93 lo"64 4-21 11-75 20-01 2-28 1-55 4’94 2-12 11-46 ' 6-71 6-76 0-39 2-16 0*59 17-56 The varieties containing water are supposed to be more or less decomposed. Analyses of allanite t, u (a = 3'790) from Schmiedefeld near Suhl in Thuringia by Credner, v from Iglorsit in Greenland by Stromeyer, w cerine from Bastniis by Hisinger:— t u V w Silica 36-82 37-65 3302 30-17 Alumina 16-94 15-99 1623 11-31 Oxide of lanthanium . "I 930 __ Protoxide of cerium > 13'22 3-19 21-60 28-10 Tttria 1 0-56 Cu 0-87 Protoxide of iron . . 7 17"11 16-83 15-10 20-72 Protoxide of manganese 0-56 023 0-40 — Lime 14-84 13-60 11-08 9-12 Magnesia 0-86 0-22 — — Water 0-28 1-80 3-00 —■ Allanite is found in long acicular cn ratals and Granular masses in Greenland at Iglorsoit, Alluk, and several other places in granite; in Norway at Hitteroe in granite ; at Jotum-Fjeld and Snarum. The variety called orthite in granite at Finbo near Fahlun, at Stockholm in gneiss, at several other places in Sweden, Fille-Fjeld and Hitteroe in Norway, in the granite of the Thuringerwald, Werchoturie and Miask in the Ural. The variety called cerine at Riddarhytta in Sweden. The form of allanite is shown by v. Kokscharow to approach very closely to that of epidote. At Sillbohle near Helsingfors crystals of epidote frequently occur, the interior of which con sists of orthite. The crystal described by Haidinger assumed
