Dims: 3.3 x 1.9 x 1.8" (8.3 x 4.9 x 4.6 cm)
Wt: 6.2 oz. (174 g)
Total Wreck Mine, Pima County, Arizona, U.S.A.
This interesting specimen consists of a Mottramite crust that almost completely covers a nondescript, gray base rock. Much of the crust is in the form of a sparkling druse of tiny crystals and a large area of tightly-arranged stalactitic formations. These formations are generally in very good condition- a few are obviously damaged- and reach lengths of 0.3" (8 mm). All have a black color and a bright, pearly luster. A portion of the specimen has also been coated with a layer of a massive, dark brown material that I cannot identify. Like other specimens that I have seen from this mine, the Mottramite might be a pseudomorph from another mineral.