TABULAR-SPAR. 115 It is translucent. It is semi-hard. It is brittle. It is easly frangible. Specific gravity, 2.855, Stiltz. 2.86, Hauy, Chemical Characters. When put into nitrous acid, it effervesces for a mo ment, and then falls into grains. It is infusible before the blowpipe. It is phosphorescent when scratched with a knife. Constituent Parts. Silica, - 50 Lime, 45 Water, 5 100 Klaproth, Beit. b. iii. s. 291. Geognostic and Geographic Situations. It forms a bed in primitive limestone, where it is asso ciated with brown garnets, blue-coloured calcareous-spar, trcmolite, aetynolite, and variegated copper-ore, at Dog- n atska in the Bannat of Temeswar. 2. Slate-
