Journal article

Formation of regularly interstratified serpentine-chlorite minerals by tetrahedral inversion in long-period serpentine polytypes

JF Banfield, SW Bailey

AMERICAN MINERALOGIST | MINERALOGICAL SOC AMER | Published : 1996

Abstract

Serpentinite from Lancaster County, Pennsylvania, consists of a variety of fine-grained serpentine minerals, chlorite, randomly interstratified serpentine-chlorite, and a series of phases based on regular interstratification of serpentine and chlorite (SxCy, where x and y are integers). Within the resolution of the AEM technique, all layer silicates have the same Mg-rich, Al-rich, Cr-rich, and Fe-poor compositions. Regularly interstratified serpentine-chlorite minerals are frequently intimately intergrown with serpentines that have repeat distances identical to those of the regular interstratifications. Thus, dozyite (S1C1, β = 90°) is intimately associated with serpentine with three-layer o..

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