Lehnerite

minerals

zweiselite

rockbridgeite

fluellite

Formula: Mn2+(UO2)2(PO4)2.8H2O
Hydrated normal phosphate, meta-autunite group
Specific gravity: 3.5 to 3.6
Hardness: 2 to 3
Streak: White
Colour: Bronze yellow, honey yellow
Environments

Pegmatites

Lehnerite is a very rare uranium-bearing phosphate.

Localities

At the type locality, the Hagendorf South Pegmatite, Waidhaus, Neustadt an der Waldnaab, Upper Palatinate, Bavaria, Germany, lehnerite is a secondary mineral in the oxidised zone of the complex granite pegmatite, associated with decomposed zwieselite and strongly corroded rockbridgeite (HOM, Dana, AM 75.1433). In the same paragenesis fluellite, carlhintzeite, morinite and pachnolite occur (AM 75.1433).

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