The most important source of yellow gem elbaite is the Canary mining area in the Lundazi District of eastern Zambia.
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The authors used Vis-NIR spectral measurements combined with LA-ICP-MS data to investigate the usefulness of absorption spectra.
Read MoreLiddicoatite, a calcium-rich lithium tourmaline, was recognised as a separate mineral species in 1977, and named in honour of Richard T. Liddicoat.
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Several transparent, faceted, blue to blue-green copper-bearing tourmalines containing growth tubes and cracks surrounded by sleeves of pink colour were examined for this report.
Read MoreThe Mt. Mica area in southwestern Maine has been mined for tourmaline and other pegmatite gems since the 1820s.
Read More“Paraíba” tourmalines continue to be recovered in small amounts from north-eastern Brazil.
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Gem-quality bright blue to green “Paraíba”-type Cu-bearing tourmaline is now known to be found in deposits in Africa (Nigeria and Mozambique), in addition to three commercial localities in Brazil (in Paraíba and Rio Grande do Norte States).
Read MoreTwo new deposits of Cu-bearing tourmaline have been found in Paraíba State, Brazil, not far from the original source at Mina da Batalha.
Read MoreGreen tourmaline from north-western Zambia show a growth pattern reminiscent of trapiche emerald/ruby when sliced perpendicular to the c-axis.
Read MoreAn overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.
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