Mineral assemblages and textures of granite-hosted veins in the HemerdonW-Sn deposit: constraints from scanning electron microscope chemical X-ray mapping

摘要

We report the results of a petrological and mineralogical microscopy study of granite-hosted greisen-borderedveins within granite of the Hemerdon W-Sn deposit, Devon, one of the five largest W deposits in the World. The deposit is currently mined at the Drakelands Mine. The Hemerdon granite is a satellite intrusion of the larger Dartmoor pluton of the post-Variscan Cornu-bian granitoid batholith.