The crystal chemistry of duftite, PbCuAsO4(OH) and the β-duftite problem Kharisun ; Taylor, Max R. ; Bevan, D. J. M. ; Pring, Allan Abstract Publication: Mineralogical Magazine Pub Date: February 1998 DOI: 10.1180/002646198547413 Bibcode: 1998MinM...62..121K