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IIAUYNE. 399 transparent...translucent. Lustre vitreous, on the surface of fracture inclining to resinous. Colourless, white inclining to yellow, green, grey, blue. Streak white, h = 6'0. o = 2-287 •■.2’292. Before the blowpipe melts with more or less difficulty into a colourless glass. Is completely decomposed by hydrochloric acid and nitric acid forming a jelly of silica. NaCl |- 3NaSi + 3AlSi, silica 37 - 6, alumina 31'4, soda 19'1, sodium 4 7, chlorine 7 2. Analyses of sodalite a from Greenland by Ekeberg, b from Vesuvius by Arfvedson, c from the .Ilmen mountains by E. Hoffmann, blue sodalite d, e from Lichfield in the State of Maine by Whitney, f from Lamo by Borck:— Silica .... Alumina . Bed oxide of iron Magnesia . . Soda .... Potash . . . Lime .... Chlorine . . . a b e 36-00 33-75 38-40 32‘00 35-50 32-04 1 0-15 — — J 25-00 26-23 24’47 — — 0-32 6-75 5-30 7-30 d e / 37'30 37-63 38-86 32-88 30-93 1-08 30-82 — — 044 23-86 25-48 22-03 0-59 — 0-51 — — 1-21 6-97 — undet. In crystals, rounded grains, and granular masses. White sodalite is found in the older masses ejected by Vesuvius, and in the modern lavas, in drusy cavities at Pala- gonia in the Val di No to in Sicily, a green variety massive and crystallized, with eudialyte, arfvedsonite, felspar, in a bed in Mica slate, at Kangerdluarsuk in Greenland, a blue variety (the first cancrinite) with felspar and elaeolite in the Ilmen ’fountains in Siberia. Sodalite is also found in trachyte at Biiden near Laach, in syenite at Friedriehswam in Norway, Lichfield in the State of Maine. 232. HAUYNE. — Ilauyne; Phillips, Ilauy. Dodeka- edriseher Amphigen-Spath (in part) ; Mohs. Ilauyn; Haus- mann, Haidinger. Cubic. a 100, o ill, d Oil.
