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LIGHT RED SILVER-ORE. 85 Geognostic Situation. It occurs in veins in the same species of rocks as the dark red subspecies, but is remarkably distinguished from it by its accompanying minerals, which are, native arse nic, red orpiment, copper-nickel, white cobalt ore, straight lamellar heavy-spar, calcareous-spar, and fluor-spar, and occasionally native silver, silver-glaiice or sulphureted sil ver-ore, copper-pyrites, and small quantities of galena or lead-glance, iron-pyrites, and sparry ironstone. Geographic Situation. Europe —This ore occurs at Andreasberg in the Ilartz, where it is accompanied with native arsenic, quartz, and calcareous-spar; in many of the mines in the kingdom of Saxony, as at Kurprinz Friedrich-August zu Gross- scherma, along with native arsenic, and lamellar heavy- spar ; at Himelsfiirst, along with native arsenic, copper- pyrites, heavy-spar, brown-spar, and quartz ; at Johann- georgenstadt, with -white cobalt-ore, nickel-ochre, silver- glance, and iron-pyrites ; at Marienberg, with white co- halt-ore, native arsenic, galena or lead-glance, dark red silver-ore, iron-pyrites, heavy-spar, calcarcous-spar, fluor spar, sparry ironstone, and brown spar; at Schneeberg, with white cobalt-ore, dark red silver-ore, copper-nickel, iron-pyrites, sparry ironstone, calcareous-spar, and quartz; at Joachimsthal in Bohemia, it is accompanied with sil- ver-gknee, brittle silver-glance, white cobalt-ore, orpi- ment, copper-pyrites, sparry ironstone, brown-spar, cal careous-spar, heavy-spar, and hornstone ; at Markirchen in Alsace, along with native arsenic, silver-glauce, galena or lead-glance, copper-pyrites, brown-spar, calcareous- spar, and quartz ; in the Sierra Morena in Spain, along with arsenical silver-ore, and calcareous spar; and at Sckemnitz and Xrannitz in Hungary. F 3 America,