Mineralpedia Details for Schrockingerite

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Schrockingerite

More properly spelled Schröckingerite, this mineral is named for Baron Julian Schröckinger von Neudenberg, an Austrian geologist who found and correctly described the mineral. Schrockingerite is an uncommon mineral that forms as a result of the alteration of uraninite in oxidized uranium deposits, and may, in fact, be post-mine in origin. Found in only a few localities. Schrockingerite is quite radioactive. Fluoresces a strong yellow-green under ultraviolet light.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/schrockingerite.pdf

Formula: NaCa₃(UO₂)(SO₄)(CO₃)₃F·10H₂O
Crystal System: Orthorhombic
Crystal Habit: Globular, Aggregates
Cleavage: Perfect, None, None
Luster: Vitreous - Pearly
Color: yellow
Class: Orthorhombic - Dipyramidal
Hardness: 2.5
WebMineral: View Schrockingerite
Mindat: View Schrockingerite

Schrockingerite from near Wamsutter, Sweetwater Co., Wyoming, United States

This platy to micaceous crystals in patches to 5mm across.

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Schrockingerite from Grand Co., Utah, United States

Special Info: Poisonous!!

Glassy yellow thin plates, some showing terminations. The broadside of the crystals both lying flat and on end in a radial fashion. No specific mine is noted.