Santafeite, a Re-Examination and New Empirical Formula

Pete J. Dunn and Donald R. Peacor
Department of Mineral Sciences, Smithsonian Institution, Washington, DC 20560, USA
Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA

Abstract: Santafeite, known only from New Mexico, USA, is re-examined using single-crystal X-ray and microprobe techniques. The new idealized formula, consistent with space group requirements, is (Mn2+, Fe3+,Al,Mg)8(Mn4+, Mn2+)8 (Ca,Sr,Na)12[(VO4),(AsO4)]16(OH)20 · 8H2O.

Keywords: santafeite • vanadates • manganese • New Mexico

Mineralogical Magazine; June 1986 v. 50; no. 356; p. 299-300; DOI: 10.1180/minmag.1986.050.356.16
© 1986, The Mineralogical Society
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