Dims: 2.3" x 1.8" x 1.1" (5.8 x 4.6 x 2.8 cm)
Wt: 3.57 oz. (101.4 g)
Poison Canyon, near Grants, New Mexico, U.S.A.
Another example of crystalline Tyuyamunite, the dull gray host rock of this specimen sports at least 5 discernable clusters of radiating blades. These clusters have a very regular round shape and do not exceed 0.3" (8 mm) in diameter. The largest is incomplete, as it is missing a portion of the bladed crystals, but I cannot tell if this is due to damage. The blades have a moderate yellow coloration and a visible pearly luster. It is impossible to determine their translucence or clarity. They rest on a flat bed of massive milky-white calcite that coats one face of a calcareous shale or limestone slab. One other surface of this slab shows a bright yellow discoloration where a thin dusting of Tyuyamunite occurred.