Accessible Requires Authentication Published by De Gruyter April 1, 2015

Rationale for the existence of four- and eight-reversals in antigorite

Gian Carlo Capitani and Marcello Mellini
From the journal American Mineralogist


The validity of the structural model of antigorite based on the occurrence of four- and eightmembered tetrahedral rings is confirmed. The quality of crystals, single-crystal X-ray and synchrotron diffraction, lattice geometry, HRTEM interpretations, and coordination chemistry still provide evidence in favor of these refined structures. The arguments used to invalidate this model and support an alternative one based on the occurrence of tetrahedral six-reversals only and octahedral sheet offsets do not hold.

Received: 2007-10-16
Accepted: 2007-12-18
Published Online: 2015-4-1
Published in Print: 2008-5-1

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