Phosphuranylite (H3 O)3 KCa(UO2 )7 O4 (PO4 )4 • 8H2 O c 2001-2005 Mineral Data Publishing, version 1...790 X-ray Powder Pattern: Flat Rock mine, North Carolina, USA; nearly identical to dewindtite. 7.83...haiweeite, uranian “opal”. Distribution: In the USA, from the Flat Rock and Buchanan pegmatite mines...North Carolina; in the Ruggles mine, near Grafton, and the Palermo #1 mine, near North Groton, Grafton Co...Connecticut; at the Barker (Ferguson) mine, five km southeast of Keystone, Pennington Co., South Dakota; from the |