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98 COPPER. No metal occurs so frequently in a native state as cop per, and it is often met with in large masses on the surface o t le earth, particularly in uncultivated and remote re gions. In the interior of the earth, it generally occurs in veins, where it is usually associated with red copper-ow, and brown ironstone, seldomer with red ironstone, copper- glance or vitreous copper-ore, copper-pyrites, malachite, ana copper-green, and most rarely with oliven-ore, and its congenerous species. The rocks in which these veins are contained, are granite, gneiss, mica-slate, chlorite-slate, talc-slate, foliated granular limestone, and grey-wacke. also occurs imbedded in masses, or in drusy cavities, in serpentine, amygdaloid, old floetz limestone, and floetz ironstone. The earthy minerals with which it is gene ra ly associated in the different formations, are, quartz, calcareous-spar, chlorite, and a kind of soft clay. Geographic Situation. Europe -It occurs in small veins and imbedded por tions m serpentine, in the Island of Yell, one of the Zetland Islands; in red sandstone, along with cop- pci-pyrites, grey copper-ore, malachite, brown hema tite, sparry ironstone, and iron-pyrites, in Mainland, the larges, of the Zetland Islands. It has been Jong known as a mineral production of Cornwall, where it occurs in veins that traverse granite, and clay-slate, along with tin- s one, re copper-ore, malachite, ironstone, common quartz, rock crystal, sometimes with chlorite, &c It generally occurs near the surface, or only a few fathoms under it, although there are instances of its being found ' Cr y c,ee P in some of veins. It i s met with in the mine