Dims: 1.7" x 1.1" x 1.0"(10.4 x 2.8 x 2.5 cm)
Wt: 1.00 oz.(28.6 g)
Silver Hill Mine, Marana, Arizona, U.S.A.
This specimen consists of a crust formed by several round clusters of acicular, radiating Rosasite crystals, on a base rock made of various iron oxides. The crystals are extremely thin and fine, and do not exceed 0.1"(3 mm) in length. The clusters have a silky luster, and the crystals are translucent. A few small areas of the crust are coated with calcite, giving them a vitreous luster. A small amount of damage, in the form of bent or broken crystals, is visible, but the crust's general condition is very good. The host rock(likely composed of goethite) is red-brown to a deep-brown in color, has no luster, and exhibits botryoidal tendencies in some places.