Zippeite
Zippeite is a uranium sulfates mineral that forms as thin, tabular to prismatic crystals and crusts with a yellow to orange color. It commonly occurs in oxidized zones of uranium ore bodies and often displays a vitreous to resinous luster on its faces. Specimens from classic localities in the United States are sought after for their bright color and association with other uranium and alteration minerals.
- Formula
- K3(UO2)4(SO4)2O3(OH) · 3H2O
- Rarity
- Common
- Stability
- Moderately Stable
- Collector interest
- Moderate Interest
- Classification notes
- Sulfates; Uranyl sulfates; Phyllosilicate-like? (uranyl sulfate minerals)
About Zippeite
Collectors value Zippeite for its striking hues and delicate crystal habit, as well as its context within the uraniferous alteration environment. The mineral can occur in crusty aggregates or delicate tabular plates, sometimes accompanied by related minerals such as phosphuranynite or meta-autunite. While small and fragile compared to more robust minerals, well-crystallized Zippeite from known Utah deposits and other American localities remains a staple for cabinet displays and mineralogical study.