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Formula: HAl(UO2)4(PO4)4.16H2O
Hydrated normal phosphate, autunite group,
uranyl mineral
Crystal System: Monoclinic
Specific gravity: 3.20 measured, 3.150 calculated
Hardness: 2½
Streak: Yellow-white
Colour: Yellow
RADIOACTIVE
Environments
Sabugalite is a secondary mineral formed in the oxidised zone of uranium veins
(Webmin), associated with meta-autunite,
saléeite and phosphuranylite
(HOM, AM 36.671-679).
At the type locality, the Bica Mine, Sabugal, Guarda, Portugal, sabugalite is associated with
meta-autunite, saléeite,
phosphuranylite, milky quartz and
feldspar (Dana).
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