Unusual Columnar Poker Chip Calcite Pyrite Chalcopyrite Morocco 226g Vanadinite_cluster Old Stock 1970's or early

Old Stock 1970's or early 1980's Illinois

This self-standing specimen is a violet/purple Anhydrite polished Crystal

This gorgeous mineral features sensational curving patterns and bull's eyes of varying colors from light green to nearly black

highly transparent Calcite crystals

This is a spectacular Vanadinite specimen with fine

Unusual Columnar Poker Chip Calcite Pyrite Chalcopyrite Morocco 226g Vanadinite_cluster Old Stock 1970's or earlyThis is a truly fascinating, unusual specimen of lustrous, bright white Columnar Poker Chip Calcite from El Hammam, Meknes, Morocco. 3. 07" x 2. 81" x 1. 67" x 77. 9mm x 71. 4mm x 42. 5mm The dot in the centers of the columns of Calcite is Pyrite and Chalcopyrite. Each Poker Chip like crystal is growing "stacked" on top of another in a columnar fashion. Curiously, the Calcite columns are probably a secondary growth formation. The centers of the