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Cuprian Liddicoatite Tourmaline

Yusuke Katsurada and Ziyin Sun, May 8, 2017

Identifies 13 copper-bearing tourmalines, which have traditionally been assumed to be elbaite species, as liddicoatite.

Copper-bearing (Paraíba-type) tourmaline from Mozambique

Brendan M. Laurs, et al.

Copper-bearing tourmaline from Mozambique was first recovered in 2001, but its Cu content was not recognised until 2003.

Spectral Differentiation Between Copper and Iron Colourants in Gem Tourmalines

Paul B. Merkel and Christopher M. Breeding

The authors used Vis-NIR spectral measurements combined with LA-ICP-MS data to investigate the usefulness of absorption spectra.

Multicoloured Bismuth-bearing Tourmaline from Lundazi, Zambia

Mary L. Johnson, Cheryl Y. Wentzell, September 1, 1997

Tourmalines from an alluvial deposit near Lundazi in Zambia consist of colour-zoned pink/colourless/yellow-green “watermelon” nodules.