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Yellow, Mn-rich elbaite with Mn-Ti intervalence charge transfer

George R. Rossman, Stephanie M. Mattson

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Abstract

The color of yellow-green to yellow-brown Mn-rich elbaite tourmalines from Zambia and Nepal is controlled by Fe^(2+)-Ti^(4+) (brown) and Mn^(2+)-Ti^(4+) (yellow-green) intervalence charge transfer. The proposed Mn-Ti interaction responsible for an absorption band centered \nat 325 nm is especially well developed in the Zambian tourmaline whose spectroscopic properties are discussed.

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The color of yellow-green to yellow-brown Mn-rich elbaite tourmalines from Zambia and Nepal is controlled by Fe^(2+)-Ti^(4+) (brown) and Mn^(2+)-Ti^(4+) (yellow-green) intervalence charge transfer. The proposed Mn-Ti interaction responsible for an absorption band centered \nat 325 nm is especially well developed in the Zambian tourmaline whose spectroscopic properties are discussed.

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Available abstract

The color of yellow-green to yellow-brown Mn-rich elbaite tourmalines from Zambia and Nepal is controlled by Fe^(2+)-Ti^(4+) (brown) and Mn^(2+)-Ti^(4+) (yellow-green) intervalence charge transfer. The proposed Mn-Ti interaction responsible for an absorption band centered \nat 325 nm is especially well developed in the Zambian tourmaline whose spectroscopic properties are discussed.

Key concepts: Tourmaline, Charge (physics), Chemistry, Analytical Chemistry (journal), Crystallography, Mineralogy, Materials science, Metallurgy

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