| | Journal (article/letter/editorial) | (Česká republika) Phurcalite and uranophane-beta from Ruprechtice near Liberec (Czech Republic) Jiří Sejkora1)*...ISSN 2570-7337 Abstract A rare uranium supergene minerals, phurcalite and uranophane-beta, were found...Ruprechtice near Liberec (northern Bohemia, Czech Republic). Phurcalite occurs there as bright to deep yellow...5693(19) Å, V 3780.9(5) Å3. Chemical analyses of phurcalite correspond to the empirical formula Ca2.20(UO2)3...09(PO4)1.96(AsO4)0.04·6H2O. Key words: phurcalite, uranophane-beta, uranium minerals, unit-cell parameters, |
|