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Manganese oxide minerals from veins in the Leinster granite

Moreton, S.; Green, D. I. and Tindle, A. G. (2006). Manganese oxide minerals from veins in the Leinster granite. Irish Journal of Earth Sciences, 24 pp. 29–36.

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Abstract

Hollandite and cryptomelane occur as intergrown botryoidal masses with goethite in a quartz vein hosted by the Leinster Granite at Cloghleagh Mine, near Blessington, Co. Wicklow. Coronadite and romanèchite accompany pyromorphite in an oxidised Pb–Zn�quartz vein at Old Luganure Mine, Glendasan, also in the Leinster Granite. Quantitative analyses show the Cloghleagh material to consist of bands of varying K:Ba ratio ranging from cryptomelane (K > Ba) to hollandite (Ba > K), but neither approaches end member composition. The Luganure material is mostly coronadite of near Pb-end member composition, in some cases mixed, or intergrown with, romanèchite.

Item Type: Journal Article
Copyright Holders: 2006 Royal Irish Academy
ISSN: 2009-0064
Academic Unit/Department: Science > Environment, Earth and Ecosystems
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 14945
Depositing User: Elizabeth Lomas
Date Deposited: 23 Feb 2009 15:45
Last Modified: 25 Jan 2011 07:19
URI: http://oro.open.ac.uk/id/eprint/14945
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