2331 CALCITE, QUARTZ pseudomorph after ANHYDRITE, Irai, Rio Grande do Sul, Brazil, 6.5 x 1.5 x 1.2 cm, | |
Irai is famous for Amethyst flowers and Calcite. Here is a Calcite crystal with the form of hexagonal prism. The long crystals remind us of an clear Aquamarine, but this is Calcite. On the lower half of the Calcite are many Quartz pseudomorphs after Anhydrite. A unique Calcite specimen. |