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Formula: Al4(UO2)4(PO4)6(OH)2(H2O)19.5
Hydrated phosphate, uranyl mineral
Crystal System: Triclinic
Specific gravity: 2.9 measured, 2.9 calculated
Hardness: 2 to 3
Colour: Yellow
Luminescence: Strong pale yellowish green fluorescence under UV
Very strongly RADIOACTIVE
Environments
Pegmatites
Sedimentary environments
Localities
At the type locality, Unnamed U deposit (1), Hunan, China, furongite was found in the oxidation zone of
a uranium deposit in a Lower Cambrian (older portion of the Cambrian,
that lasted from 539 to 485 million years ago) carbonaceous shale. It
occurs as tabular crystals and as dense cryptocrystalline aggregates, associated with
variscite, evansite,
opal, halloysite,
limonite and autunite
(AM 63.425).
Furongite from Hunan - Image
At the Kobokobo pegmatite, Mwenga Territory, South Kivu, DR Congo, furongite was found in the complex
granite
pegmatite associated with
moreauite
(HOM).
Furongite from Kobokobo - Image
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