| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Oklahoma > Gypsum var. Selenite with hour-glass shaped zoning |
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| DESCRIPTION: | No. 79257 |
| Mineral: | Gypsum var. Selenite with hour-glass shaped zoning |
| Locality: | Great Salt Plains, near Jet, Alfalfa County, Oklahoma |
| Description: | Twinned prismatic selenite crystals, the colorless variety of the mineral species gypsum, with hour-glass-shaped zones of brown clay inclusions. The gypsum crystals are repeatedly twinned resulting in a shape like the letter K. Ex. Ara T. Dildilvan collection |
| Overall Size: | 26x21x10 mm |
| Crystals: | 7-19 mm |
| Archived: | For reference only |
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