Dims: 3.3 x 2.2 x 1.2" (8.4 5.6 x 3.0 cm)
Wt: 2.95 oz. (83.8 g)
Ojuela Mine, Mapimi, Durango, Mexico
Hundreds or even thousands of tiny Plattnerite needles coat a druse of white quartz crystals on this specimen. The Plattnerites do not exceed 0.1" (3 mm) in length, and are considerably thinner than 1 mm. There appears to be damage on the more exposed surfaces of the piece, but I canont tell whether they are human-induced or not. They are far too small for me to effectively study with a 10-power loupe, but appear to have reasonably good form. Their bright lusters are combined to create a subtle but noticeable sparkle in moderate light. All have the standard black color and are essentially opaque, though a few seemed to be at least translucent under bright light when viewed through the loupe. The quartz druse on which they rest is made up of small, well-formed crystals that are in good condition and have excellent form. They tend to be coated with a thin layer of either limonite or rust (not much difference!) and are translucent to dimly transparent. This druse rests on the base, which is made of limonite.