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460 bismuth. 9 Geognostic and Geographic Situations. It occurs along with red cobalt-ochre, copper-nick el, ?ey copper-ore, copper-glance or vitreous copper-ore, azure copper-ore, sparry ironstone, quartz, and calcare- ous-spar. It is found at St Agnes in Cornwall; Schneeberg and Johanngeorgenstadt in Saxony; and Joachhnsthal in Bo hemia ; but is a rare mineral. . Observation. It has been confounded with green iron-earth, from which it is well distinguished not only by its external as pect, but by its accompanying minerals. ©RDER XIII.