HEPATIC OR L1VER-PYRITES. ' Internally it is usually glimmering, seldom approach ing to glistening, and the lustre is metallic. The fracture is even, which sometimes passes into small-grained uneven, sometimes into flat conchoidal. The fragments are indeterminate angular, and sharp. & edged. It occurs in distinct concretions. Specific gravity, 4.834, Karsten. Geognostic Situation. It occurs only in veins in primitive rocks, and is usual ly accompanied with red silver-ore, native silver, galena or lead-glance, common pyrites, black and brown blende, sparry ironstone, iron-ochre, seldomer with cobalt-glance, red cobalt-ochre, cinnabar, and grey antimony ore : the accompanying vein-stones are, quartz, heavy-spar, brovvn- spar, fluor-spar, and calcareous-spar. Geographic Situation. It is found in Derbyshire; Freyberg, Johanngeorgen- stadt in Saxony; Wolfstein in the Palatinate; Salz- hurg ; Goslar in the Hartz ; Hungary ; Transylvania; Bohemia ; Iceland ; Norway; Sweden ; and Siberia. »• Observations. It is very nearly allied to Magnetic Pyrites: it is pro bably only a subspecies of that mineral. 4. Magnetic