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Gortdrumite, a new sulphide mineral containing copper and mercury, from Ireland

Published online by Cambridge University Press:  05 July 2018

G. M. Steed
G. M. Steed*
Affiliation:
Department of Mineral Exploitation, University College, Cardiff
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Abstract

Gortdrumite superficially resembles chalcocite but is more distinctly anisotropic, and is present in a vein containing ferroan dolomite and baryte which cuts dolomitized limestones from the Gortdrum Orebody of County Tipperary, Ireland. It has an empirical formula of approximately (Cu,Fe)6Hg2S5. A distinctive powder diffraction X-ray pattern has been obtained which indicates a probable orthorhombic crystal lattice with a 14.96, b 7.90, and c 24.1 Å. The reflectivity at 589 nm is 25.1 to 27.9% and the VHN10 hardness range 186 to 230.

Type
Research Article
Information
Mineralogical Magazine , Volume 47 , Issue 342 , March 1983 , pp. 35 - 36
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1983

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References

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