APATITE
Specimen apa-13
$ 80.00Dims: 3.6 x 2.3 x 2.0" (9.1 x 5.8 x 5.1 cm)
Wt: 9.70 oz. (275.2 g)
Casapalca, Peru
One of the oddest Apatite specimens that I have seen, this piece consists of two partly intergrown sprays of parallel and intergrown Apatite prisms. One of these sprays is heavily damaged- every crystal therein is broken and incomplete. However, the other cluster is in excellent condition and contains crystals that are 1.7" (4.3 cm) long. Their hexagonal cross-section is evident, but their intergrowth has warped their form. All have crystalline but very uneven terminations, but their prism edges are well-defined and their faces are striated but clean and show a bright, pearly-to-vitreous luster. Their color is especially interesting- when I first saw them, I thought that they were amethysts because they possess a pale violet color at their bases that fades to near colorlessness at their terminations. The cluster is essentially translucent, but individual crystals show patches of transparence. The clusters rest on what appears to be a layer of crystalline calcite, which in turn partly coats a base rock that is rich in metallic sulfides, especially pyrite, chalcopyrite, and galena.