Reports

Ordering of V2+, Mn2+, and Fe3+ Ions in Zoisite, Ca2Al3Si3O12(OH)

Science  29 Jan 1971:
Vol. 171, Issue 3969, pp. 374-376
DOI: 10.1126/science.171.3969.374

Abstract

The presence of very small amounts of Mn2+, V2+, and Fe3+ ions in zoisite can be easily detected by the electron paramagnetic resonance technique at room temperature. The Mn2+ and Fe3+ ions are completely ordered and are probably located in the Ca(1)- and Al(II)-sites, respectively, whereas the V2+ ions probably occupy both Ca(1)- and Ca(2)-sites, with a preference for the Ca(1)-site.

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