Dims: 3.1 x 1.9 x 1.4" (7.9 x 4.8 x 3.6 cm)
Wt: 2.42 oz. (68.5 g)
Mapimi, Durango, Mexico
Scores of tiny Conichalcite nodules form a crust that partly covers the limonite base of this specimen. These nodules do not exceed 0.1" (3 mm) in diameter and are generally in excellent condition due to the protective nature of the host rock on which they rest. Each nodule is made up of several nearly microscopic crystals that appear to have reasonably good orthorhombic form, given their intergrowth. The crystals have a grass-green coloration and a bright pearly luster, and are translucent.