Millerite, Quartz (Var: Chalcedony)
US highway 27 roadcut, Halls Gap, Lincoln County, Kentucky, USA
3.8 x 2.7 x 1.9 cm. This is an exceptional miniature of classic Halls Gap millerite. This specimen features a tangle of rich nested sprays of brassy, acicular millerite crystals in a chalcedony lined geode, typical for the locality (when digging, you would look for geodes in slightly green, or nickel-rich, rock layers). An outstanding combination ...
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