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Submitted on: 11 September 2004.
Revised on: 17 October 2004.
Accepted on: 12 November 2004.
___________________EUROPEAN JOURNAL OF MINERALOGY
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Submitted on: 23 July 2007.
Revised on: 01 November 2007.
Accepted on: 18 November 2007.
___________________EUROPEAN JOURNAL OF MINERALOGY
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