Dims: 2.2 x 1.6 x 0.9" (5.6 x 4.1 x 2.3 cm)
Wt: 1.9 oz. (55.1 g)
Castro Vireyna, Huancavelica, Peru
This large thumbnail specimen consists of a cluster of radiating Epidote crystals that are all intergrown towards their bases, and appear to emanate from a single point. The specimen is in good condition, as there is visible damage to several of the crystals' terminations, and the longest crystal does not exceed 2" (5 cm). Their form is good, but several of the crystals are rather warped in the fact that they appear to be twinned along their prism length (see the close-up image). Oddly enough, those twinned crystals are arranged in a straight line, so that their twinning planes form a single plane that runs through the entire cluster! All have a dark, greenish-black color with green highlights and a luster that ranges from waxy to vitreous. They are also opaque and there is no host rock present, though there are a few tiny smatterings of a dull tan material lining the crevices between crystals. I have never seen twinned crystals aligned together like this before.