Does cation ordering in omphacite influence development of lattice-preferred orientation?

Abstract

Three mantle eclogite xenoliths from the Robert Victor mine in South Africa were studied. The calculated pT conditions are p>4.5GPa and T between 950oC and 1145oC.

The clinopyroxene has a jadeite component between 0.19 and 0.52. In-situ, at these composi

Keywords

• clinopyroxene
• lattice-preferred orientation
• strain
• cation-ordering
• mantle eclogite