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COMMON APATITE. 211 Physical Characters. It becomes electric by heating, and also by being rub bed with woollen cloth. Chemical Characters, When thrown on glowing coals, it emits a pale grass- green phosphoric light. It dissolves very slowly in the nitric acid, and without effervescence. It gradually loses its colour, when heated before the blowpipe, but its lustre and transparency are heightened. It is infusible without addition. Geoznostic Situation. © It occurs in tinstone veins, and also imbedded in talc. Geographic Situation. It occurs in yellow foliated talc, and, along with fluoi- spar, in the mine called Stony Gwynn, in Cornwall: at Sehlackenwald in Bohemia, in tinstone veins, along with tungsten, wolfram, topaz, and iluor-spar; at Ehrentne- dersdorf in Saxony, along with tinstone, copper, and ar senical pyrites, fluor-spar, steatite, lithomarge, talc, and quartz ; imbedded in iepidolitc near Rosena in Moravia; in a mixture of quartz and felspar at Nantes, lour-au- Diable, in department of the Lower Loire; at Arendal in Norway, along with magnetic ironstone, garnet, horn blende, and limestone; in veins, on St Gothard in Swit zerland ; and in Estremadura in Spain, in small tables, along with phosphorite. 03 Second
