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Fall 2005, Volume 41, Issue 3

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Inclusions in Transparent Gem Rhodonite from Broken Hill, New South Wales, Australia
Paul W. Millsteed, Terrence P. Mernagh, Vincent Otieno-Alego, and Dudley C. Creagh


GIA Insider, Jan. 9, 2004; American Jewelry Design Council Collection; museum; Mark Patterson, 250 pSolid, vapor, and fluid inclusions in transparent gem rhodonite crystals from Broken Hill, New South Wales, Australia, have been identified for the first time using Raman spectroscopy and gemological/petrographic techniques. Among the solid inclusions are sphalerite, galena, quartz, and fluorite. The rhodonite also contained hollow needle-like tubes and negative rhodonite crystals. Three-phase inclusions were found to contain a saline liquid, a gaseous mixture of nitrogen (N2) and methane (CH4), and ilmenite crystals.

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