Dims: 4.1" x 2.6" x 1.5"(10.4 x 6.6 x 3.8 cm)
Wt: 4.34 oz.(123.0 g)
Silver Bill Mine, Gleeson, Arizona, U.S.A.
This specimen contains a large amount of Rosasite, some of which is the most beautiful that I think I have seen. The specimen consists of thin layers of a dull, brown goethite/limonite host rock that have formed large hollows in a base of the same material. Most of the Rosasite consists of a pale blue botryoidal crust that coats the interior of these hollows. This crust has no crystalline form, a dull luster, and is opaque. Its color slightly deepens from the outer to the inner surfaces of the hollows. One of the smaller hollows actually forms a tunnel that goes through the specimen. The other opening is lined with the deepest blue-green Rosasite that I have ever seen. It also occurs in a botryoidal form, but it is easy to see from its luster that each nodule is made up of countless micro-thin acicular, radiating crystals. The formation has an almost velvet luster to it and is opaque. I suppose it is possible that the paler, crusty material is simply a weathered, worn version of this deep, plush formation. It really adds to the specimen!