roadcut in Johnson County, Iowa, USA
Thumbnail, 2.6 x 1.9 x 1.2 cm
Ex. Jim White
A rich spray of acicular millerite crystals to 2 cm in length perched on calcite. These form in rare geodes found at this locale, and are old USA classics, though seldom seen today. These are found in roadcuts around the county, and are a different beast from the frilly hairy millerites from nearby Ollie.