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FELSPAR. 3G7 n 0 P ? T S 65-91 65-82 0643 65-62 65-75 65-76 20-93 19-00 17-03 17-61 17-72 18-31 0-49 0-80 — •— 10-18 12-25 1396 12-98 12-05 14-06 3-50 3-30 0-91 1'70 3-66 — o-ii 0'34 1'03 0'94 0-82 1-20 — 0-07 — — — — t (g = 2-5552) from Baveno, u green Silica .... Alumina . . . Red oxide of iron . Potash .... Soda Lime Magnesia . . . v green crystallized felspar (a = 2'E46.. .2-549) from Bodenmais by Kemdt, w, x of nodules resembling glassy felspar in the trachyte of Hohenhagen near Dransfeld in Hanover by Schne- dermann, y flesh-red felspar (a = 2 , 67(S...2 , 570) from Bathurst in Canada (Thomson’s perthite) by T. S. Hunt:— Silica . Alumina Potash Soda . Lime . Magnesia Protox. iron Ox. mangan. Analyses of felspar z from Chamouni, « from the syenite of tbe Ballon do Servanco in the Vosges, both by Delesse, /3 of milk-white, translucent moon-stone, slightly decomposed, from Oeylon, y of the same decomposed, pearly, both by Brongniart, ® of partially decomposed felspar from the Auersberg in the Harz by ltammelsberg, e from Laurvig (g = 2’5872), ( from Priedriehswam, exhibiting a play of sky-bluo light, both by C. Gmelin:— Silica Alumina . Potash . Soda Lime Magnesia . Red ox. iron W ater . In attached and imbedded crystals, crystalline and granular masses. e 4 t w V W X y 65-72 65-32 63-66 64-86 64'86 66'44 18-57 17-89 17-27 21-46 21-92 18-35 14-02 13-05 10-66 2-62 4-15 6-37 1-25 281 5'14 1029 7-53 6-66 0-34 O’lO 0-39 — — 0-67 O’lO 009 2’28 — — 0'24 (with Cu 0'30) 0*45 — — l'OO — 0-19 015 — — 11 0'40 z a ft 7 S £ K 66-48 64-26 64-00 67*10 66*26 65-90 65*19 19-06 19-27 19-43 17*83 16*98 19*46 19*99 10-52 10-68 14-81 13*50 14-42 6'65 7*03 230 2'88 — — 0-20 6-14 7-08 0-63 0'70 0-42 0*50 0-43 0*28 0*48 — 0-77 0-20 trace o-ii — — — 0-50 — 0'31 0-44 0*63 — 0-40 1*14 1*07 1-29 0*12 0*38
