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APATITE FAMILY. Geognostic and Geographic Situations. It occurs in a vein, in the district of Marmarosch in Hungary. Observations. 1. It was for some time described in systems of mine ralogy as a variety of Fluor-spar. 2. The celebrated Prussian chemist John, has publish ed the description and analysis of a mineral under the name Mato fkite, from Ratofka, near Werea in Russia, which appears to be nearly allied to this subspecies, and may possibly prove to be a new species, intermediate be tween fluor and apatite. The following is the descrip tion and analysis of it, as given by John, in the second . continuation of his work intituled, “ Chemische Unter- suchungen,” &c. “ Its colour is lavender-blue; and it is composed of loose dusty dull particles, that soil slightly, and are not particularly heavy. It is contained in aphrite. Constituent Marts: Fluat of Lime, 49.50. Phosphate of Lime, 20.00. Muriatic Acid, 2.00. Phosphate of Iron, 3.75. Wa ter, 10.00. XXIII. FLUOR
