Dims: 1.0" x 0.8" x 0.7"(2.5 x 2.0 x 1.8 cm)
Wt: 28.1 g w/ box
This little specimen, like others we have in stock, consists of two sections of a small geode that are lined with white, radiating Aragonite needles. These needles do not exceed 3 mm in length, and are nearly as thin as human hair, which means I cannot effectively determine whether they are translucent or transparent. They have a vitreous luster, though, giving them an excellent sparkle. Scattered among the Aragonite clusters are shiny, black botryoidal formations of kutnahorite, a carbonate of calcium, magnesium, manganese, and iron. As the crystals are microscopic in size, I will describe the clusters as being opaque with very well-formed mammillary globules that have a silky luster. They contrast rather nicely with the white Aragonite needles. The skin of these geodic sections is made up of shale or mudstone, and both sections are affixed to the inside of a plastic specimen box.