Abstract

A large number of serpentine specimens have been studied and found to be either chrysotile or antigorite or mechanical mixtures of these two minerals. Electron microscopic examination, HCl solubility tests, X-ray diffraction, and differential thermal analyses reveal the existence of such a mixture in an unknown serpentine sample. Evidence indicates that one mode of formation of antigorite may involve the recrystallization of chrysotile. It is possible that the fibrous antigorite present in narrow veins that surround and/or penetrate larger antigorite grains was formed by such a process.

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