Pb2 (Mn3+ , Fe3+ )(VO4 )2 (OH) Brackebuschite c 2001-2005 Mineral Data Publishing, version 1 Crystal...As0.01 )Σ=1.01 O4 ]2 (OH). Mineral Group: Brackebuschite group. Occurrence: A rare secondary mineral...Guaico district, Córdoba Province, Argentina. In the USA, from a prospect in the Swisshelm district, Swisshelm...Cruz Co., Arizona; on the Hack claim, Paradox Valley, Montrose Co., Colorado. From the Kusu vanadium deposit...55819; Harvard University, Cambridge, Massachusetts, USA, 96255. References: (1) Palache, C., H. Berman, and |