Dims: 1.4" x 1.0" x 0.4" (3.6 x 2.5 x 1.0 cm)
Wt: 6.3 g
Huanuni, Oruro Department, Bolivia
This small specimen consists of a single radiating cluster of thin Vivanite needles. These needles do not exceed 1.4" in length or 2 mm in thickness, and are generally in good condition, though the tips of several of them are obviously missing. They show a pearly luster and are dimly translucent under a bright, halogen light. However, that is enough for one to notice that the entire cluster has a uniform, dark grayish-blue coloration! There is a small amount of an indeterminate, pale brown host rock that is attached to one side of the cluster, but the point from which all of the crystals radiate is free of material. All of the Vivianite specimens that we have seen before this one have been either a pure, dark green or a deep blue-green in color; this is the first that we have seen with a completely blue coloration.