Zirconolite from the Glen Dessarry Syenite; a comparison with other Scottish zirconolites

M. B. Fowler, C. T. Williams
1986 Mineralogical magazine  
Zirconolite from the Glen Dessarry syenite; a comparison with other Scottish zirconolites ZIRCONOLITE, a rarely reported Ca, Zr, Ti oxide has been identified during a fission-track and electron probe investigation of the Glen Dessarry syenite, Inverness-shire (Fowler, 1981 (Fowler, , 1985 . Here we give details of its mineralogical relationships and chemistry--including data for the REE, uranium, and thorium--and compare these with new and published chemical data of other natural examples from
more » ... ural examples from Scotland and elsewhere. Problems over nomenclature have not been fully resolved, with two names, zirconolite and zirkelite, in use for chemically identical minerals. Structurally, zirconolite is monoclinic and zirkelite trigonal (Mazzi and Munno, 1983; White, 1984) but structural information is frequently difficult or impossible to obtain because of the small grain-size and metamict nature of the material. Unfortunately, this
doi:10.1180/minmag.1986.050.356.21 fatcat:sbo4tt6bqzf75dykj4n2rnj2bu