Dims: 3.0" x 1.8" x 1.4" (7.6 x 4.6 x 3.6 cm)
Wt: 5.00 oz. (141.7 g)
Mapimi, Durango, Mexico
A yellow crust made up of sparkling Adamite crystals rests on the iron-based host rock of this specimen. The Adamite crystals that make up the crust do not exceed 0.2" (5 mm) in length and are in excellent condition, showing almost no damage. They have the standard orthorombic bladed crystals with a diamond-shaped cross-section and a shallow wedge-shaped termination. Their luster is bright and nearly adamantine, and all are at least translucent, with some crystals' transparence showing excellent clarity. There are many tiny Adamite crystals scattered around the cluster of larger ones, and more Adamite can be seen in veins in the host rock. The host rock itself is surprisingly heavy, being made mostly out of hematite instead of goethite and limonite. There is much veining in the host rock besides that of the thin lines of Adamite.