Nelson Rock and Mineral Club
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Location: Buller River, Hawks Cragg
NGR: Collector/photographer: Mary Davies/Mike Blowers Context: Pale yellow crystals of Autunite in cretaceous Hawks Cragg Breccia. Under ultra Violet light Autunite fluoresces green, see top left of picture Scale: Bottom picture FOV 9.3 cm W, Top insets FOV 1.9 cm W, Mineralogy: Autunite Ca(UO2)2(PO4)2 · 10-12H2O A secondary mineral resulting from the oxidation of primary uranium minerals |