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VIII.—How Chlorite is Converted into Biotite
Published online by Cambridge University Press: 01 May 2009
Extract
General Mcmahon's paper in the GEOLOGICAL MAGAZINE for June attacks my conclusion that the Malvern biotite is formed from chlorite, but leaves my evidence untouched. Indeed, a large part of the article is occupied in discussing a theory which I do not hold. I have never said that the chlorite was converted into biotite by contact-action only. That there may be no further mistake, let me repeat that, in the Malvern rocks, chlorite is changed to biotite by contact-action plus dynamic deformation.
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