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South Dakota Mineral Specimens
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OKF-191 Calcite on Calcite Interior, South Dakota. Ex. Nancy Collins collection. A beautiful calcite on matrix measuring 10.2 x 5.8 x 5.2 cm. The first generation of calcites are large yellow rhombohedrons. This second-generation are clear to white nail head calcites in epitactic overgrowth. They climb up the sides of some of the first generation calcites, even capping some of the terminations. A beautiful display of crystals which is much better in person. $175
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OKD-378 Barite on Calcite Elk Creek, Meade Co., South Dakota. Ex. Nancy Collins Collection. Certainly a classic American specimen that is uncommon to find on today’s market. This one has a pair of parallel growth crystals which are transparent and a rich brown color. The barites are up to 4.3 cm each rising off well formed, yellow calcites. One crystal has a tip ding on its backside. The specimen displays best with support so I have it attached to an acrylic plate at this time. It is 7.5 x 5 x 2 cm in overall size and there is an exceptional luster to the barites. 950$
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OKA-994 Schorl White Elephant Mine, Pringle, SD. Black crystals to 4.5 cm in rose quartz. 6 x 5 x 5 cm piece. Crystals are well formed but poor / no terminations. Unusual location. 8$
