492 AESElflATES, PIIOSPIIATES. In fine powder is soluble with difficulty in hydrochloric acid, more easily m sulphuric acid. Analyses of amblygonite from Amsdorf by Eammelsberg Phosphoric acid . . . 48'00 47-15 Alumina Lithia Soda Potash , Fluorine 36-26 6-33 5-48 38-43 36"62 7-03 — 3-29 — 0-43 — 36'89 8-11 Is found in crystalline masses, with tourmaline and topaz, in KX K," 1 ' A ™ dorf »<> tinfe 19 ' f E Jf 0TI]Vr ^—Phosphate of yttria; Phillips. Xeno time; Beudant. Pyramidaler Eetin-Baryt; Mohs. Ytter- spatn ; xiausmann. Xenotim ; Haidinger. Pyramidal. 101,001 = 41° o'. a 100, e 101. aa ea 90° ee ee" 55 17' 0 FIG. 494. Combination, ea. Cleavage, a. Frac ture splintery... uneven. Translucent... translucent on the edges. Lustre resinous. Brown and red of various shades. Streak light brown. Brittle, h = 4-5...5-0. g = 4-39...4-557. Infusible before the blowpipe. With borax melts into a cokiurless bead, which becomes milky on cooling. Soluble with difficulty in salt of phosphorus, forming a colourless glass. ““ iro ° wiie ^ pho, p hide ° f Y 3 P, phosphoric acid 37'17, yttria 62-83. Analysis of xenotime from Norway by Berzelius: Phosphoric acid with traces of hydrofluoric acid Yttria Basic phosphate of protoxide of iron According to Scheerer, xenotime from Norway contains Phosphoric acid and silica x ttria and red oxide of iron gg 33-49 02-68 393