Nigeria as a New Source of Copper-Manganese-Bearing Tourmaline

Gems & Gemology
Written By Precious Braswell
Photo by Franzisca Imfeld.

Photo by Franzisca Imfeld.

In 2001, a new deposit of colored tourmalines in a wide range of colors was discovered in Nigeria.

These six samples (0.69-1.44 ct) show a range of colors from the new tourmaline deposit in Nigeria. All of them were identified as copper-manganese tourmaline by EDXRF qualitative chemical analysis.

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GG_Fall 2001_Nigeria as a new source of copper-manganese-bearing tourmaline_CPS-2.jpg
GG_Fall 2001_Nigeria as a new source of copper-manganese-bearing tourmaline_CPS-3.jpg
Precious Braswell
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