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Published online by Cambridge University Press: 15 September 2014
In this chapter Professor Heddle submitted the results of the analyses of Orthoclase from fifteen localities; of Albite from four; of Oligoclase from eight; of Labradorite from eleven; of Andesiel from five; of Anorthite from three; and of Latrobite from two.
The three last minerals being now, for the first time, recognised as British species.