Haiweeite on Selenite

Unknown Owner

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This is a very rare, hydrated, calcium, uranium, silicate. The massive calcite matrix gives way to gemmy, 2 mm long, colorless calcite crystals upon which are emplaced, tens of rosettes of bright lemon yellow, haiweeite, to 2 mm across. Extremely colorful and rarely ever seen in dealers stocks. This is an extremely large and rich specimen of the material. It came out about 5-6 years ago, if I recall.