Journal of

GEOsciences

  (Formerly Journal of the Czech Geological Society)

Original Paper

Kristy-Lee Beal, David R. Lentz

Aquamarine beryl from Zealand Station, Canada: a mineralogical and stable isotope study

Journal of Geosciences, volume 55 (2010), issue 1, 57 - 67

DOI: http://doi.org/10.3190/jgeosci.059

Aquamarine crystals occur in crustal A-type pegmatite-aplite dykes and associated quartz veins and greisen zones at the Zealand Station Be-Mo deposit, south-central New Brunswick (Canada). Electron-probe microanalysis (EPMA) of aquamarine determined that the chromophore Fe (< 1.4 wt. % FeO^T) is present in octahedral sites, with substitutions responsible for simple and oscillatory zonation (SEM-BSE imaging). Average water content (1.53 wt. %) was calculated using an empirical formula, consistent with two T_REL (>800 °C) of 1.3-1.4 wt. % in beryl channels. The δ¹⁸O of the quartz and beryl were within 1 ‰, consistent with magmatic crystallization from an ¹⁸O enriched source, and δD values on channel water have magmatic signatures.