| 16964: Gypsum - $30 Great Salt Plains, Salt Plains National Wildlife Refuge, Alfalfa County, Oklahoma Cabinet - 12.3 x 8.9 x 3.1 cm 93 grams Specimen status: Reserved Send an email with specimen number to order From a classic locality for the
species comes a complex cluster of gypsum blades, with
individual crystals reaching 3.8 cm. Rendered brown by
sand/silt inclusions. This specimen is in fine condition.
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